This was a last minute add to our event and it was fun. We did have a few minor issues, but as this was the first time I had ordered something like this, it was a learning curve on our end. The sign was much bigger than anticipated, so we'll know to size down a bit, and allow time for editing the graphic once the proof comes back.
The only negative is that I had a very hard time explaining hashtag signs to the various people on support and they kept sending me examples that were no where near the hashtag sign. These would have been fun to have, but was okay without them.