The new Hilton Homewood Suites that opened up across from the fairgrounds just put rooms up for reservation during Corvettes at Carlisle 2023.  It's a bit pricy, but SO close to the fairgrounds and really really nice!  (ex. $713 for 3 nights, including tax).

https://www.hilton.com/en/hotels/mdtcphw-homewood-suites-carlisle/?cid=&WT.mc_id=&dclid=&gclid=&AWC=

Also, for something quite a bit cheaper, but still a really nice hotel, about 13 minutes from the fairgrounds, try the HOLIDAY INN EXPRESS & SUITES CARLISLE SOUTHWEST – I-81.  (Ex. $403 for 3 nights including tax)

https://www.ihg.com/holidayinnexpress/hotels/us/en/carlisle/harcl/hoteldetail 

But hurry. Availability won't last and prices may change at any moment.!