What I want to know is,
if supply and demand are really what's driving the prices, then why is gas cheaper in Orlando than where I live? Every time we go to WDW/Orlando, the gas prices are always lower there, the last time was about 3 weeks ago. I saw mid-grade for $2.19 (that was the average price), yet we paid $2.49 at home before we left.

I think they purposely maintain lower prices in Orlando to lure the tourists, probably an uneducated guess on my part, but I honestly can't think of any other logical reason behind their lower gas prices.