For any/all first timers and introverts, I was you when I went to last years 10th anniversary of the podcast. Everyone I met was more than friendly. We said hi to all the podcasters but didn't want to hold them up too much; Even so we had great chats.
If they have any events that interest you I'd tell you to sign up early, they were great fun and total stranger became instant friends. If nothing else, we are all Disney fans so you already have common ground.