Don't worry too much about getting stuck. Just be careful and go slowly and you'll be fine. Once you do get stuck though, just remember what caused it (eating too fast, a certain food, etc), that way you can avoid it in the future.
I've only been truly stuck twice. It is AWFUL, but really it was my own fault (I ate something I knew might cause problems). It was a painful, cramping sensation like a boulder was shoved down my throat and was just sitting on my band and there was nothing I could do. About 20 minutes later the food came back up. Then my stomach could not handle solids for an entire day (the first time I did solids for dinner after having a Breakfast episode and the whole cycle started over).
I haven't found anything that help once I'm stuck. Not papaya enzyme, pineapple juice, or small sips of Water. I just had to ride it out.
Good luck and don't worry too much about getting stuck, just do what you know you should and avoid what you know you shouldn't do and you'll do great!!