We, too, like to save those weekend points, and we generally travel on a Saturday (or even Friday) from Mpls. We leave this Saturday and are staying at the Caribbean Beach for $98. We've also stayed at Dixie Landings, and last December at the Poly for the one night (we LOVE the Poly) as an extra holiday treat.
We usually take the afternoon flight which gets us into Orlando around 5, so we still have an evening to hang out by the pool or go to DD. If we were to arrive later than that, too late to do anything, we probably would opt for an airport hotel.