Depends! If its a summer trip and we're driving, we generally stay at the Poly or AK for the weekend just to hang out by the pool and relax. If we have guests that have younger children, such is the case, this Dec we're just checking into our 2 bedroom on Fri and staying until the following Sat. Its just to much for the little guy to move.
We have done both and probably will continue to do both based on a case by case scenario. We have more than enough points to the effect we bank at least enough for two more trips every year. It really just depends on what we're in the mood to do and see.
If we're staying at VB or HH we always use the weekend nights for convience.
Do whats comfy for you, they are your points.