I think the Premium package will be easy for the CM's to deal with since it's virtually identical to the old Gold plan.
It's the dining plan that is causing problems, since it's completely new.
I was booked on the Gold and then switched to the Premium. So far so good with booking things. I just booked our La Nouba tickets tonight & Mickey's Backyard BBQ without any problems.
Of course, I haven't gotten there yet and so don't know if there will be problems with the ringing of it up by the time I get there. I am also thinking that by July all the bugs will be worked out.