Hi everyone,
New to the board as I take a new job that includes more travel especially on Delta.

Couple of questions about the 1 day Sky Club passes-I won't travel enough to justify $700 bucks of a membership however a pack of 4 on ebay for under $100 is certainly worth it:
I apologize if these questions have been asked before on this forum!
#1. Is a 1 day pass only good at 1 location? For Example my next trip is BOS-CVG-TAMPA. I believe it's only good at one for the day meaning I can't go to the BOS one prior to taking off then go into the CVG location correct?
#2. Readmittance-Ignoring the above for just a moment, if you use your pass are you allowed back in if you leave? CVG has smoking lounges, so I would like to have a drink, pop out to the smoking lounge and back into the Sky Club.
#3. Anyone have any horror stories about buying invalid 1 day passes on Ebay or other sites? Any info would be appreciated.
#4. Dress code-Are Jeans (or denim pants) ok?

Thank you again for your help!