I'm sad that I won't be there to meet you all! There's a pavillion where the registration and t'shirts are and the bathrooms are close to there too. So that may be a good meeting place.
As far as dressing....last year it was cold at the start, but it was sunny, so it did warm up. This year's forecast looks the similar (at least they took the rain out!) I would wear thicker socks, leg warmers, shorts, light weight full finger gloves, arm warmers, ss jersey, & lined jacket with zip sleeves (but I'd probably take off the sleeves before riding) Layering is key since you'll be working up a sweat on those monster hills
As for bars...you're not too far north of New Hope...from the park you can just follow River Rd. into town and make a day of it!
Enjoy the ride! It's such a beautiful area, and the leaves have started to change so the scenery will be spectacular!
"The bicycle is just as good company as most husbands and, when it gets old and shabby, a woman can dispose of it and get a new one without shocking the entire community." -- Ann Strong, Minneapolis Tribune, 1895