I believe that in the past, you did need to provide your own park ticket as well as the event ticket. But I believe that this year the pasta parties now as Ariel484 said, you can get in the park after a certain hour with the pasta ticket. They have been doing lots of tweaks and changes this year, so you will really need to wait and see what happens once they start to announce details for next year.
Good running stores will often take shoes back for 30 days, no questions asked. (At least the ones near me do) They should also really let you either hop on a treadmill instore, or take the shoes for a spin or two around the block before you buy them. More than likely a shoe that fits ok just walking around the store, will fit differently when you start to run in it. As far as recommendations go, for the most part, I'd take them with a grain of salt. And even though a brand may tend to use the same last across their line (leading to shoes with a large toebox, or a higher instep, etc) a given model may vary from the rest of the line.
Thank you. I am thinking of running down there Saturday a.m. and seeing what they say. Just talking to them and see what is happening.