I have really bad motion sickness -- cannot do spinning rides AT ALL, cannot do motion simulators. Roller coasters are a little better but I have to be careful. I also get seasick very easily. Last summer I rode one of those pirate ships at the fair that swing on a pendulum -- I thought it looked ok because it wasn't very fast and didn't spin. Ended up spending the rest of the day in the first aid tent.
I have found one thing that works for me -- the Relief Band.
https://www.amazon.com/ReliefBand-Motion-Sickness-Device-Batteries/dp/B00VU8XXBE/
This not one of those inexpensive pressure bands. It zaps your wrist with a small electrical (battery operated) current.
http://www.reliefband.com/how-it-works/
Wearing this, I can go on Dumbo, Astro Orbiter, Indy, GRR (it spins big time), and just about anything else in the park. I've been on teacups (although only on the condition that my kids didn't spin it). I've worn it every time I've been to DL in the past 8 years or so ... still, until our last trip, I was afraid to try Star Tours because motion simulators just make me so sick. Finally last year I decided to try it, making it the last ride of the night just in case. No problem. I ended up riding it two more times before we left that week. There is only one ride that was still awful for me ... Space Mountain. OMG I thought I was going to die before I got off that ride!
It's pricey but unlike patches, etc., you don't have to have a doctor's rx and you can use it again and again. You can also wear it just when you want, so it doesn't affect you at other times. You can even turn it on AFTER you get off a ride if you're starting to feel sick and it should help. Although I've never tried that because I always turn it on before. You do have to be sure you have it in the correct spot on your wrist, but that's explained in the instructions.
Best investment of my life to be able to go on all these things with my kids!