Apparently Sundays are not popular days for Battlegrounds. I had a few quest items to turn in, so I tried going in a couple times this afternoon and got in right away. And, just now, I just waited 90 minutes, and not enough people ever even showed up to even start a game. Luckily, I had a tablet with which to do other things once I bored of killing off the elite Crushridge Ogres. At least I raised my Staff skill by 65 points.