Something I learned that helps to take some of the potential left-out feelings of a gluten free diet at parties and events, and I know the host or hostess well enough, is to have a very close substitute along with me. Just a little bit of prior knowledge about the menu can help one to join in on the fun.
For example, if your host or hostess will be serving pasta, you can bring some pre-cooked gluten-free pasta along with you. I like Tinkyada Pasta (Ignore the strange translations on the web site, it’s really good, I promise, and they are sold in most grocery stores). For tacos: corn tortillas (check the Hispanic aisle) and on and on. Sometimes you will need a lot of substitutions, sometimes just a few. Maybe you’ll choose not to bring anything at all. But if you find yourself looking longingly at your fellow revelers’ plates, and it’s taking away from your enjoyment of the party, consider taking steps next time so your mind can be free to have fun!