cheeeeee knowing that it will play and sound like a toy
Haha I hear you! I was eying up a similar piano for months, and some forum participants managed to talk me out of it. I ended up with a Yamaha 61 keys E373 instead - not as portable, but infinite fun to play on/with. I still have a wish for a tiny little mini keyboard someday... but I don't do a lot of any traveling these days, so it will have to wait until I see a bargain I just can't refuse 
I spend a lot of time traveling so need a better keyboard than someone going out of town for a few days.
Once I took the Folding Piano 88 on a flight. Got it partially unfolded on the tray in front for arranging music. For entering notes into a computer notation program no problem. When playing on a regular keyboard or piano need to make minor changes since the keys feel different.
thepianoplayer416 Nice! You may find the pocket piano interesting. It comes with 4 separate pieces that can be connected via magnet with various combinations.
cheeeeee
I did find Pocket Piano from Spain interesting as a travel piano. The only thing is that the pieces are not joined together tightly so you need to put it on the table to play. Guess this is the reason I paid for the Piano de Voyage from France. It has 4 pieces joined together by screws that you can put on a keyboard stand instead of a table. Both of these are over $1,000 after conversion from Euro.
The whole idea of a "travel piano" escapes me. I've done a lot of traveling and if I think back to the places I've visited, I can't imagine bothering with a gadget like that. I guess if I had to go to a place where there was no culture, no nightlife, nothing to see or do, I might amuse myself in a hotel room for a short while by trying to play music on a plastic keyboard, with lousy action, and toy like sound. No, even in a place like that, I'd rather read a book than fiddle with a folding piano. To me, traveling is about seeing new things, meeting new people, making use of the time there to drink in the culture. Not plunking on a toy. If I really had the need to play some piano, I'd probably visit a music store, or maybe go to the lounge off hours, make friends with the staff, and play a real piano. I also think time away from practicing is a good thing; clears the head. Not to mention, 3.5 pounds doesn't sound like much, but that's a lot of luggage space that I'd reserve for things I'd actually use or wear or fill with souvenirs.
For whatever reason you might desire a portable piano, I would think that the primary consideration would be key width. Any different than a standard piano and it might turn into somewhat of a liability when you get back to your usual instrument.
Many years ago, some pianists used to travel with silent keyboards. I don't remember what those consisted of, but I would imagine they were simply for keeping fingers exercised.
PianoMonk
After at least a decade of playing piano, I still think of myself as a learner. If you travel out of town for a few days at a time you wouldn't think of packing a keyboard. Someone like me who would spend at least a month away from home with relatives which is too much time off playing.
2 years ago I travelled out of town during the peak of COVID. The place I went to required travellers to stay in a quarantine hotel for 2 weeks. I wouldn't be satisfied being stuck in a hotel room staring at the TV all day. I took the Folding Piano 88 along and started learning the Bach-Marcello Adagio in Dm.
Besides playing, I also use a keyboard for arranging music. Even a cheap keyboard with MIDI can be used for this purpose.
thepianoplayer416 I recognize the benefits of a travel piano for some. But there's a big difference in the $89 one and the $1000 one. For me, and I emphasize... FOR ME, rather than play on a keyboard that is not, at the very least, touch sensitive, has noisy keys, that are not a standard size, I doubt I would find it very enjoyable. And I very much like to enjoy the time I spend playing or practicing. I agree with the "cheap midi keyboard". In fact, I've been thinking about the Yamaha psr e383, which has a very playable keyboard, and sounds quite good.
Yes, I grabbed the E373 because it has been discontinued and I got it for a fraction of the price. I really love it too. I also agree that touch sensitiveness is an absolute must, because without it you're basically reduced to being a typist. But then again I don't use mine for traveling, it's just a toy to enjoy in addition to the much more realistic Clavinova.
For travel, now that I have seen this, I can't unsee it... Must... have... some.... day.... 
The type of travelling keyboard that is already out of date is the rubber roll-up piano. The roll-up first came out of Japan at least 2 decades ago. They were not touch sensitive and to this day still not touch sensitive. You find many people buying a roll-up and posting review videos online like it's a novelty product. It's ok as a toy but for serious playing is problematic when it's not touch sensitive and don't allow the use of a sustain pedal.
thepianoplayer416 The type of travelling keyboard that is already out of date is the rubber roll-up piano.
I bought one. Three keys didn't work. I got my money back and didn't have to return the "piano". However, I have never ever used it. Instead, I have a travel controller. It is very strange to hear it make the same beautiful sounds as my VPC1! 
*
... feeling like the pianist on the Titanic ...
About 3 years ago after I got the earlier version of the Folding Piano 88, I came across this troubleshooter's guide video probably posted by a company rep or insider:
Item #2 caught my attention. The company admitted that each key is nothing more than a plastic cover snapped onto a metal piece that can come off easily.
#3 the hinges that lock in place enable you to fold & unfold the piano. However, the separate pieces are not made to lock tightly that would allow you to put the keyboard on a folding stand without having a board underneath.
The other item #4 the foot pedal does work properly and good for beginners. According to some people who reviewed the product, the pedal unit does not support half pedaling. You'd press it all the way down to get the effect of the full sustain but nothing in between.
The Folding Piano 88 does everything as labelled on the box but don't expect any more out of a keyboard that costs less than $200.
