Just booked a weekend at SM in June. And it seems clear this campground practices pup discrimination. For online reservations they have the options for Class A, TT, 5th wheel, etc. But if you have a pup you have to call. My wife called and told the agent that we were camping with another family and they were in a small RV (smaller than my fully expanded pup by 1-2'). At first she wasn't going to put us together. We were destined for pup town and our friends would be in the RV area. But for some reason the agent got it in her head that we and our friends were family and said something to the effect of "forget the rules, I am putting you together in the RV area". She told us that she noted our reservation with a lot of "DO NOT MOVE" messages so no one else would change our selected sites. The crazy part is that while our location is a really nice one along the lake, it is not even a full hookup. Power, water and cable. No sewer. Why can't a pup use these spots? The agent even said we are close to a brand new bathhouse in the loop. Why spend the money on that if you aren't going to allow equipment on the spots that would need such facilities? My advice to anyone looking to book here: Lie. Make a reservation online and say you have a TT.