I have terrible motion sickness issues. On my recent solo trip (TR linked below), I wore a prescription patch behind my ear that my doctor gave me. I didn't try any additional meds or sea bands, etc.
I can tell you that I think it did help a lot, but my motion sickness didn't magically go away. I had some nausea on certain indoor/dark roller coaster rides (Indy and space Mountain) and on virtual reality ones like Star Tours. Most of that was manageable and short lived (i.e., it stopped when the ride did). Only on Space did I come close to vomiting; that ride ended just in time!
I did find that outdoor roller coasters (Screamin' and BTMRR were both fantastic) and rides like RSR I had no problem with. It's clear my triggers are not having a good way to focus my eyes (which is why SM was so traumatic) and not being outdoors with the wind in my face. I avoided the tea cups and other rides I thought would be problematic.
I do recommend the patch. It's serious medicine, but I do think it allowed me to enjoy more things and kept me from getting so sick that I couldn't continue touring. However, just don't expect it to magically go away. You'll still need to manage your triggers and possibly avoid some rides.
HTH