Board Thread:Questions and Answers/@comment-222.167.107.59-20130826090424/@comment-5945589-20130826134720

Without a strong leader, you'll be welcomed every time you level up for about an hour. Heck, even with a good leader you'll still be welcomed by the OP players.

So its best to level up when your low on gold and sealstones, or during events when people are busy using their AS for something else ;)