@amandataintor , I'm sure someone will have some exact details, but from previous years this is how it has worked; I've bought guest passes for the last three years. The Canvas meal ticket/guess pass was only for Canvas sponsored events and food. This allowed you to (1) eat all your meals (which they are good and worth it, no scrimping!) and (2) take part in all of the different Canvas activities (there are normally movies, music/concerts, and all sorts of other fun games and things to do).
I'm not sure which resort activities you're talking about, but if they aren't Canvas sponsored or part of the package you get from staying at the resort, then no, it probably isn't covered. As for your kids, I'm not sure what the age limit is for when kids need their own pass, but I've taken my daughter when she was 1, 2, and 3 years old and never got her a pass and she was fine. Granted she really didn't each much if any food and was there with three paying people (me, husband, and my Mom), but I was never questioned about her needing a pass.