I think it is probably worth checking with your club to see how much beer you all would like to serve at the conference. In our case, we had all been focused on the conference for over a year so we had lots of collaborations and barrel aged beers that we wanted to serve in addition to the beers that we had brewed for the competition. We set up a google document where we all logged what beers we had in the pipeline that would be available for the conference. We had over 60 possible beers, and there was no way we could serve that many at Club Night, so taking on a couple of Hospitality Shifts was no problem.
As the other folks have mentioned, if you can drive to the conference, then it is a great way to do your part to make the event a success.