Start good eating habits prior to surgery! Such as-no straws, tiny bites, no drinking with meals, and put your fork down between bites. Get rid of all carbonated / sugary drinks, carbs and sugar to help prepare u for surgery. I didn't really stick to that preop and let me tell u it is not something that comes easily. I'm still working on it 4 weeks post op and its very necessary. For surgery and the healing period itself I would make sure u have gas-x chewable, and possibly a heating pad I've heard it helped with gas but I never tried it. Just follow all your surgeons instructions and if you have a doubt about something call your dr. It's your health and your life. Oh and as far as the time it takes to get approval, once submitted my insurance company needed additional information. From start to finish that took about 16 days for me. I'm still a newbie but I hope this helps. Good luck with everything!