The line at Hideaway went out the door on Friday afternoon.
The store had a 40 percent off everything deal for its annual 420 sale. On Saturday the store will have a 40 percent off hookah sale, or a buy one get one of equal or lesser value.
Other businesses were also extra busy on Friday as Spring Jam weekend ensued.
"We're pretty set up to deal with a lot of people," said Flaco Huevos, Mesa Pizza manager. "We're mentally preparing."
Huevos said he expects the restaurant be even more packed than a typical weekend.
Burrito Loco Bar and Grill, and Blarney Pub and Grill were also teeming with customers by 4 p.m. on Friday and expecting to maintain the crowds thru Sunday.