There used to be 4 European servers, but they merged them down to 2 now (sign of how the subscriptions have fallen I guess) called Keeper and Devourer; they are different to the 6 American ones.
I'm not sure I get the whole VIP status thing. If you subscribe for only 1 month, do you get to keep the benefits, or are you bumped back down to Premium status? In which case, would you lose some access to classes (eg Monk) and adventure packs? Couldn't find a straight answer anywhere.