Happy Hour is from 5p-7p. Bottomless mimosas, bellinis, and champagne/chambord is only for $8!!!
The rolls are VERY TASTY. I had the TOP 6 which was phenomenal; basically you get a sample of their 6 best rolls in the house in one plate. This is the best way to taste 6 different rolls at the same time without having to pay for 6 full rolls and without costing you a grip of money along the way!
The Pink Elephant was really good it is comparable to the yama crunch roll at Yama Sushi, is the best way I can describe it.
Here is the Hachi Menu if you are interested in viewing what they have:
http://www.redrocklasvegas.com/dining/hachi_menu.pdf
The place is a little on the pricey side. I spent $60 bucks and felt like I had appetizer only. =P