But would it be rude to just not get up unless the CMs say something?
The first time I went on Tomorrowland Speedway or whatever it's called, I wasn't sure how it worked and how many times I was supposed to go around so when I returned to the place I left from and a CM seemed to tell me to keep going I asked the person next to me how many turns you get on the ride and they said they weren't sure, and to just keep going, so I did.
Then I went again and found out you go around only once! I felt SO bad for going twice! Which is why I ask what the proper thing to do would be, to ask or to remain seated.