MY ONLY CONCERN PREOP IS ...
From reading all the posts from people who have already had wls...you have to basically sip all day long with a half-hour or so break before and after you eat a meal. There are a lot who actually manage to get in more than this. I bought a bunch of regular and flavored water bottles and plan on taking one with me where ever I go for the most part.
Good luck!
Pam