I've had feedback given to me on this hotel for MANY years now - people said there was plenty of parking, and there were several trailers parked in the past.
It can't be that bad - the manager only allows three "blocks" per weekend, and all 3 of those blocks are ALWAYS taken by January... They must be doing SOMETHING right...
Ash and I visited the hotel last year - there was ample parking, and it was also possible to pull your truck into the grass around the lot, leaving just the trailer in the actual parking spot.