Hi all thanks so much for your feedback and replies. So I forgot to mention that we're going to Universal in Hollywood, not in Orlando, and just for a day on our way back from a road trip.
I didn't ride many rides when we were there in July, but the Hogwart's Express would be good. The Jurassic Park water ride might be another.
Pridemom - thank you for the suggestion

Unfortunately I don't think Hollywood has a Hogwarts Express ride, just a prop. Re Jurassic Park, it's like a log flume ride, right? So it shouldn't be too jerky..I think my concern was the drop - I read that it's like 80 ft ??
I thought Shrek was very rough, lots of jerky movement. I'm prone to headaches due to Chiari, have to avoid roller coasters and try to avoid rough rides. I thought Shrek would be tame enough for me, but I walked out with a splitting headache and did not enjoy the ride one bit.
Earstou - so sorry to hear you had a bad experience :/ Were you in a wheelchair during the ride or a regular seat? I had thought they'd make the wheelchair spots stationary, but I could be assuming incorrectly.
There was a recent thread about a suit against US due to a park policy about riders being required to have the ability to stabilize themselves on rides. I don't know more, including if that is indeed policy, but may be worth some additional investigation.
Yeah, I know there was a guy missing most or all of his limbs who wasn't allowed to ride, and he sued. I can understand his frustration but also understand that Universal has to keep safety standards. I'm thinking maybe they should have some sort of waiver you can sign, where you acknowledge the dangers and waive the right to sue.
Universal has very specific guidelines about riding their attractions.
This is a link to their Rider's Guide, which has specific information about attractions.
https://www.universalorlando.com/park-guide/universal-orlando-riders-guide.pdf
In general, their lines are accessible to manual wheelchairs, but not power devices.
This is a screenshot from the Rider's Guide which talks about what guests must be able to do independently.
I have been to Universal quite a few times, but my daughter who is disabled has not because we felt there was little she could do.
I know of people who were not allowed to ride even pretty tame things because their wheelchair seating was very supportive and the staff felt the wheelchair support showed the person was not able to maintain a proper seating position without support.
View attachment 192860
Thank you, Sue, for your detailed post. I did look at the rider's guide and requirements. That's kinda crazy and unfair that they assume a guest's ability based on their wheelchair configuration. I suppose they figure they have to have some way of assessing a rider's abilities. Still seems unfair to jump straight to a conclusion, though....So, I do have 'some strength and fair stability. At the Disney parks, what I've done is bring a simple seat cushion with a rolled handtowel inside to offset my tilted pelvis, and with that I can sit up fine. I did see either a video or photo with a man in a wheelchair putting down a rojo cushion on a Universal ride to sit on, so maybe they'd allow mine as well. I have contractures but can move and brace some, and my movement is controlled (e.g. no spasms).
I'm thinking that whether I ride any transfer rides is just going to depend on who the attendant is and how strict they want to be. What I'm trying to do is get an idea of what ride(s) would be *best* to try and transfer to, see what they say, and hopefully not get too knocked around on

Thank you again, all!!