We've just today gotten back from that region after one week skiing from Campitello and another from Corvara.
Alta Badia, Val di Fassa, Arabba and Val Gardena make up the valleys of the Sella Ronda, which is the most famous (and crowded) tour of the region. There are also a host of other regions on the same Dolomiti Superski pass that can be accesses via linked lifts and/or a short bus ride. The ticket offers something like 460 lifts, with around 1,200km of groomers prepared each night. I understand it's the world's largest area of linked ski regions on the same ticket. As a general rule the area offers a huge expanse of green-to-blue, moderate skiing on piste, with the occasional black groomer thrown in if you care to find one. You can spend a couple of weeks without really doing the same lift or run twice, other than your upload in the mornings and the home run in the evenings of course. The food is amazing, with table service in just about every mountain rifugio (i.e. all but one of our lunches had table service).
[edit - this is a shot taken as we came out of Corvara one morning]
There are off piste areas, but you'd really need a guide to get there. [edit - there's certainly off piste stuff under lifts, and short traverses that will give you a few powder turns, etc.] Also, while the groomers are in great shape, this season is not the best for the couloirs etc. that dot the area. Last season was some sort of record breaker for snow - perhaps the best year since the fifties - but this one is much lighter on for snow. The most famous off piste trip is likely the Val Mesdi off the Sella Massif. I don't think it's in shape to be skied this year (yet) but I could be wrong. There was a decent snow fall a couple of weekends ago, but the two days following saw some fierce winds which scoured the powder back to ice in a lot of areas.
So, if you're preferred terrain is Utah side country, Big Ski and Kicking Horse I would imagine the area is not really going to satisfy. It's not steep enough and it doesn't have the off piste options, especially this year. On the other hand, for a family ski trip, or for a touring experience with great lunchtime food and wine, it's pretty hard to beat.
Best of luck.
Edited by sinbad7 - 2/20/15 at 11:15pm