Get over the hopes of a teddy bear; they were not planned to be in distribution past the first week and are by most accounts no longer being loaded.
The SQ and BR lounges are in the international terminal, down the hallway to the side of the UClub in that pier of the building. But both have, from time to time, denied entry to UA pax citing overcrowding reasons. And the SQ lounge didn't have any especially good beer unless you think Tiger is special. I don't.