Looks like they have locations in and around DFW. If they are as good as the Austin shop I would take it there. If you take it in early they might be able to get it done the same day.
I took it a local shop to have it checked out. They said the bearing in fine, but the rubber bushing may be a little loose. He gave me an extra bushing in case, and told me to grease everything along the driveshaft. He said I could relplace the bushing fairly easily.
Cool, it was hard to say with out seeing it but that is what I was thinking, that you might just need a bushing. If the bearing is fine then I doubt you will have any problems on your trip, but it is nice to have a spare just in case.