I've been here for a couple of happy hours.
I agree with Charles R - no need to pay full price (especially as the regular prices are a bit hight) and it is better than Ra.

Definitely not the best sushi I've had in town, but the drinks are good (cucumber mojito!) and the place is set up well for happy hour groups.

The servers I have encountered are all VERY patient with people coming and going within the group and individual checks for everyone.  Knowing what a pain that is, I really appreciate how willingly they do it.

For good sushi, I will stick with Yasu or Sakana.  For happy hour, this is a great place - and the Tempe Marketplace location is convenient to several friends.