I have a membership and store my trailer there 7 months out of the year.
It's a fairly nice place to stay. Great if you have kids (swimming pools, kids club, miniature golf...)

Most days there is plenty of space to anchor a boat and leave it all weekend but the big holidays I try to avoid the place or plan on trailering the boat whenever you're not using it.

The water flow is normally not a big deal (box anchor and bungie rope) but the wake boats will get the chop going pretty bad

As far as seadoos it's not really a problem, because when I'm boating I'm running up or down river (not hanging around the area).
I can get you a 3 night free guest pass (if you're willing to listen to their sales pitch).