SAFD: Always onsite. I love the atmosphere, the comraderie, the excitement, and the convenience. We have stayed in many different resorts in all categories and have had no problems at any of them. We have driven a couple of times in the past for MW when it was extremely cold, but both times we were parked far away, and, of course, after arriving about 2:30-3:00, I suddenly had to use the bathroom. After a looooong walk through security and waiting in line for a bathroom, it was useless to walk all the way back to the car. Besides I was already getting adjusted to the cold by then!
One very cold day, we had taken the bus, and back when they had runners retreat tents for the 1/2 and full, the tent was not being used for the 5k and 10K, so we, and a number of other runners, sneaked in there to stay warm. Now we just huddle around the light pole with all our friends!