I don't think its silly at all. In fact, I have seen solo parties before at Goofy's and the Lilo and Stitch breakfast. Minnies as well for that matter. I would ask a waiter or other cm nearby or for that matter another guest at a nearby table. They don't usually circulate with the characters, there are always a few cm's who float around, making sure the characters are circulating and sort of keeping an eye on things. But they generally aren't next to the characters at the tables. But there will be plenty of other people around near you to snap a few photos!