almost thereeeeee...STDs and hotel block

FH and I ordered STDs back in June and then we figured we should wait on sending them so that we'd have the hotel information (lots of OOT guests).... that was harder than I thought it was going to be (anyone else feel like hotel people are flaky in general? ).
Finally have the hotel stuff pretty much settled (have to send back the agreement), ordered business cards with the hotel info, and just waiting on those so we can send it all out....also have to get the addresses on the envelopes....labels are ok for STDs right?? thanks ladies!