We're planning a 6 day trip to El Cid in June and trying to determine how much extra we should plan to spend while at the resort. We're going AI so I know food and drinks are included but how much on average should we figure for tipping? Also, I know some entertainment and Spa type options (which we wouldn't use)aren't included but what other expenses can I expect? Is there a lot of shopping on site? Arcade type places where the kids will want to spend money? Photogs taking pix like on a cruise ship or theme park that you end up purchasing? I don't mean to sound cheap (just on a tight budget) or naive but never been to an AI resort, or MX for that matter, so want to be prepared. Thanks much!