we're staying at Sheraton vistana in June - I want to simplify things and am considering pre-ordering the groceries at the on site grocery store which will have them ready for me to just pick up on arrival. My question is if this is worth the extra cost? I know there is a super Walmart close by but this option of having the groceries all ready for us when we get there just seems so convenient. Has anyone done either? your preference? I plan on buying breakfast, lunch & snack items as groceries and having dinner in the parks ( I have 3 teens so I think eating breakfast & lunch at the hotel will be a huge money saver ). thank you