Whether you hire a caterer, or are making your own, food presentation really is important. Your dishes should look as yummy as they taste. They should look fresh and full and cohesive, not like a sad metal tray of slop. Invest in cute serving ware, table runners and signage.
Same goes for drinks/bars. Keep it fun, easy to access and adorable! Next to watching you get married, your guests are there for the food and drinks! Show them a good time, it really is the best THANK YOU a couple can give to their guests. (click photos for source)