Tim Lizzie's will give it to you so long as you're dressed appropriately, buy a drink and tip appropriately, they'll give it to you.
Red phone booth
Make a reservation, become a member or like someone else said, tailgate someone who's nice enough to let you. But I'll say when I was there, the "tailgaters" weren't having much luck, but if you're already there I suppose its worth a try. I was told that if you loose your number you'll be made to do a pup crawl getting one digit of the number at each bar, after buying a drink, and then told where to head next... If you can make it around and back that is. Lol.
Walk through the door on the right of the booth.
You can get pizza at the restaurant upstairs and ask the staff for it.
Or go on their website and become a member
You have to stand outside to place weight for another person to go in and ask them for the number
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