6:30 works for me, or even 6:00.
I won't be able to stay very long, I'll have the kids with me and 8:00 is as late as I can really keep them out.
As for directions, just follow I-69 N til you see the exit for 116th street & SR37. Follow the signs for 37 North, Noblesville. The freeway ends and it becomes a 4 lane divided highway. There's a few stoplights, and it's on the left. Turn left at the next light after you see Pinheads on the left, and follow the access road behind all those businesses to get to the entrance.
For better directions and a map & street adress (to MapQuest if you want) go to their website:
Pinheads