I dive year round but I've done pool sessions with friends who are vacation divers as an experienced buddy. We go over gear assembly & donning, entry and exit, mask drills, reg recovery... standard stuff. If they have their own gear it also allows for a fresh water weight check (especially if their body or gear has changed). They prefer to do that as opposed to dusting off cobwebs on an expensive warm water dive.I only 'charge' a drink or two after the session lol.