HI Liz, Jeanie and I went to Tannehill BP Gathering last year, and I was there once before. The Park is not that far off the interstate, so motels over there one or two exits either way. The campground is quite large with a tent with no power option. Farthest from two bathroom/shower buildings with laundry machines in one of them. It is just Friday over night, the events over Saturday evening, with no one usually sticking around at all on sunday.
Thanks for the info. I am going to stay off the interstate and probably drive back on Sunday because it is 6-7 hours.