The Texas Pinball Festival is a great show. I've gone the last two years and had a blast each time. Last year my youngest scored second in the youth pinball tourney. The show has a good party feel to it as they bring in a DJ at night to get the crowd dancing.
The three main shows I attend here in the US are the Expo, Allentown and Texas. All three are quite different which makes it worth going to all three. Expo is a "convention" type atmosphere, Allentown is a "flea market" type atmosphere where you can strike a good deal or two, Texas is as previously mentioned a "party" type atmosphere where the whole family can enjoy the show even if some of the members are not pinheads.
Thanks James. I've seen all three mentioned on RGP, and that explanation puts it all in perspective.