Food and drinks should be available for cast and crew throughout the shoot. Craft services (or crafty) provide your cast and crew with sustenance in between the catered, hot meals. Pizza, sandwiches, fruits, cookies, etc. are all considered crafty. It is important that your crew has everything from water to various snacks. Also provide healthy options. Film hours are long and arduous, so you need to ensure that your cast and crew are energized while on set because losing focus and energy can be a potential hazard.
Catering is the hot, sit down meals that are served typically twice a day. General rule of thumb is that catered meals are offered 6 hours after the production starts with the next meal following six hours later.
Finally, bear in mind the dietary needs of persons on your set. Compile a list of everyone’s needs and allergies. You don’t want anyone to have an allergic reaction while on set. That would put a serious damper on what is supposed to be a fun weekend.