Last year I saw way too many of the rolling bags and they were not medical totes. They do take up way too much space and the people pulling them get really frustrated in not having enough room to maneuver them. Not as much as people on the mobility carts. At times, some got so frustrated that they just literally ran over walking people. When I am at the show I go to the aisles that don't have that many people on them. In the morning, it is the ones next to the food court. So, I go about half way and start going up & down the aisles. It helps that I usually go on Wednesday night and go ahead and buy a program. That way I get to map out the vendors I want to go see.