It may not be the rocking party central like some of the other places, but would anyone be interested in a beach vacation in lovely Belair, MB. Take over my parents place for August Long Weekend 2015, no hotel costs to pay, no expensive meals (hit the grocery store on the way out, cook everything ourselves on the stove, oven and BBQ. Hanging out on the deck, bonfires on the beach. We'd be able to setup our video game systems and play a bunch of awesome multilayer stuff all night. Only cons would be that it is a bit out of the way, but the house is big enough to accommodate everyone (if some are ok with couches and air mattresses) and may well be the best price point option.
I do like the idea of the cabin retreat, and would also like to look into the idea of hitting up a KOA Campground in lieu of a hotel if we're doing this in the summer.