This is probably overkill, but the guy I built this for sells local organic produce. At the local market, he uses it for a table 4 days a week and delivers with it 2 nights a week. With all 12 tubs in place, the top surface is 40" x 72" and relatively flat.
You could do something similar using two coolers for the much higher ambient temps where you are.
:)ensen.
