The club where T (Tad) and Ben work is Club TBD, it's owned by Sonny. It used to be co-owned by Sonny and Chad DiMera, EJ's half brother, but Chad has left town (though he may come back later), and I think Sonny is the sole owner now.
The Brady Pub is still in business. There are lots of places where people congregate. Besides Club TBD and the Brady Pub, there's Horton Square, which is supposedly an indoor spot though it looks like it's outdoors.
Jordan is Ben's sister. Kate just visited Poplar Bluff, Missouri, which is where they came from (though nobody else in town knows that), their real names are Tammy Sue and Ollie. They have been very mysterious as far as their backgrounds, and nobody knows what they are hiding, but Kate found their father, Clyde, who came to Salem recently and broke into Jordan's apartment.