I brewed two beers for a small wedding this summer. The bride and groom to be came over to help on brew day and brought some nice local honey that they wanted to use. We brewed an American IPA and a Honey Rye.
The wedding was at the beginning of August. I was planning on just serving them old school out of a plastic tote bin full of ice, but the temps were forecast for the mid 90's and I was worried about the lines foaming. I ended up using the tote bin system, and then I got a cheap Styrofoam cooler to coil up the lines in and drilled holes in it for the picnic taps. Filled it up full of ice and it kept the lines chilled and pouring without foam.
They also bought a keg of Yuengling, but it went pretty much untouched until my two kegs floated.
I've brewed for many parties, but was surprised how nervous I was about screwing something up for the wedding. I'm glad everything went smoothly and both beers came out great.