Keeping beer cold

My FH and I get married in a week and the beer trailer we were going to use needs fixing up and probably will cost too much to fix before the wedding. I have called everywhere that has beer trailer rentals and they are all rented out. Anyone have any creative suggestions? We will have 100 24 packs of beer and some wine. Only thing I can think of is just lots and lots of coolers with ice or dry ice. The wedding is at my family farm so we will have access to a house and power and all that.