For info on entry application and general information on other events and lodging at the show: www.williamshistoricalroute66carshow.com. You can find this on Facebook as well.
I will be going up to the car show on June 12th but not as an entrant. I know this will coincide with the annual Father's Day run to Cottonwood hosted by @theChad. For those going to lunch in Cottonwood, you could continue on up to Williams afterwards. It will make for a fun full day for sure!
Parking lot of Denny's, 4121 W Anthem Way, Anthem, AZ 85086 ( West side of I-17 )
Meet Time: 08:00AM Depart time: 08:15AM
Directions: I-17 to I-40 West
Take exit 163 from I-40 to Williams. From there wherever you can park.
Additional info: My cousin is this years event coordinator, Diana Jones. I spoke to her about special parking for ACE for June 12th. The response is no reserve parking for any groups (at least for now) since parking will be limited and most of the parking will be on side streets for visitors. Last years event had 367 entrants and this years anticipation will be over 500 entrants. There will be plenty of good places to eat in the downtown area of Route 66 along with live entertainment. For those interested in participating there will be three categories for Corvettes by generations on both days. The car show will not be assigning spaces for groups entering the show and it will be first come, first serve and entrants will need to be checked in by 10:00AM each day and judging will start at 10:30AM to 02:30PM. Diana will keep me posted if there any changes in parking since they are still having meetings and I will update on any news.