Congrats on your band! As fas as my experience I have never had the band get in the way of anything. I've done yoga, pilates and various other forms of exercise/activites and have never felt it or found it got in the way of something.
You really can't overeat unless it's food that goes down easy like ice cream or chocolate but again that is my experience. I think everyones is a little different. My biggest problem is remembering to chew my food completely and taking smaller bites. I still have problems with what foods I can and can't eat. I think if I could live as a vegan or vegetarian food would be a little easier to eat. However I do like meat but have a problem eating certain cuts depending on how they are cooked.
There will be a learning curve but you'll get used to it and figure out what is best for you. Best of luck!