So I just hit 80,000 tier credits so I'm now Diamond Aspirations Level 2. It's been a few years since I was at this level, and I have some questions. @dailun, @sassycat, maybe you guys could help?

1) I know I have my $750 in air travel credit to use now. Can I use that max for two people? Or if I could finagle an extra third ticket out of that amount (on Southwest) could I do that?

2) What is the last date I can use my trip? I'm thinking they just recently changed it so it would be June 30, 2017, but I'm not 100% positive.

3) The companion card - have no idea who I want to designate for this. It seems to be not that worthwhile unless I knew someone was going to be in Vegas without me. But it would be stupid to just not designate anyone, right? Don't want any of the benefits to go to waste.