I live 30 miles from Lolly's and go often. The sale is crowded, but not a mad house. However the parking can become a problem. At 9:00 (when the sale ends) they lock the doors so no one else can enter, but you will get the sale price even if it takes awhile to wait on you. They are closed until 10, they "restore" the shop and reopen at 10. Lots of fun.
Did you know there is another store called "A Little Bit of Lolly's" in the basement? It is where they sell the older bolts when the new stuff comes in. The 3 hour sale isn't happening there because it is at a discount price all the time.