there are several hotels around I77 Mooresville... I'm camping, but if I were doing a hotel, I would give Priceline a shot.. you can place a bid on a hotel for just that area and control the star level of the hotel... I'm 1 for 2 with good experiences with Priceline.. but the bad experience was Myrtle Beach which I've never found a deal on good hotel there.
Shop the hotels first and start your bid at about 1/3 the going rate.. good luck