I had my IT Bands and quad taped in January for the full. They will tape you for free. They had a sign in sheet--first come, first served. I waited about 15 minutes or so. You didn't have to buy anything. I had already bought some tape and said they could use that if they wanted, but they used their own.
One thing to consider....wear something that allows them easy access to the area you need taped. Since it was FREEZING during January, I brought a pair of shorts with me to the expo, changed in the bathroom, and then changed back into "Street clothes" when they were done.
They were very friendly and helpful, so I'm sure you can get your taping done.
Good luck everyone!! Wish I was there with you--will be doing 13 miles on Sunday, so I'll just pretend (with the time warp and distance factored in!)
Maura