We are planning our wedding for June in Phoenix. One of our options is an outdoor venue. It is a large pavilion so it has a roof and the sides that close up in that heavy tarp material. It will obviously be pretty hot then and using AC to cool it is way too expensive. The cooling company offered the use of evaporative coolers for the room. Has anyone used these and do they work to cool a very large area? Also, are they loud or would they be an annoyance at the reception? We like the room, but I really don't want to be sweating or have my guests not enjoy it because it is hot or they can't hear anything over the noise.