What a fun idea creating your own medal - I absolutely love it! I did my first Resort Fun Run on the 4th of July - the Regatta Run at the Yacht and Beach Club. It was so fun getting to run along the river to Hollywood Studios and around Crescent Lake and there was some great prizes at the end of the run! Definitely something I want to try again some time (especially at French Quarter...the beignets at the end of that race are calling my name!)
There was a mix of walking and running, although that particular day seemed to be a lot more runners. My guess is it varies for each particular day and no two races are the same. I know that I have heard of people walking the Beignet Dash at POFQ - I will probably be one of them whenever I get around to doing that one because my family will definitely want to join and they are not runners.