I'm sure we will still be going to Fish Creek a lot... come to think of it, we're headed back there for 7 days starting this Friday! (weather is looking great too!) With a solar panel or generator power isn't a problem without hookups. We manage fine with the teardrop at Fish Creek. The washrooms are plentiful and very clean so hook up there isn't a must.. Lots of huge travel trailers can be found there.. everyone seems to get along fine without hookups.
Certainly at some of the other places we have been... I'd be looking at using our own bathroom rather than some 'marginal' facilities and will want full hookups.
Once school starts up again, you shouldn't have a problem booking Bon Echo or the like. I'm jealous! You should be getting in a few trips before the snow!
Besides don't forget about Walmart! LOL