Booked this sailing a full year in advance while sailing on the Escape and got a great deal. We paid $1079 per person base fare for our BA balcony. By the time final payment was due, BAs were selling for $1929 per person!
We have sailed twice on the Escape, so it was hard not to draw comparisons between the two ships. Despite being similar ships, it actually turned out to be very disorienting having the buffet (Garden Cafe) at the front of the ship. We had a cabin near the aft elevators and found it to be a lot more of a hassle to get to the Cafe than we were used to on the Escape. But once we got our bearings, it wasn't too bad and, luckily, we had nice weather so crossing the pool deck to get to the Cafe wasn't much of a hardship. Our only indoor options would have been walking through the stateroom hallways on Deck 15 or going down to the public decks on 6-7-8 and then taking the forward elevator up to the Cafe.
Navigation issues sorted, here is a list of pros and cons of the Bliss versus the Escape:
This is an angled balcony, so the balcony itself is about half again as large as a normal balcony. Our room steward was able to bring us a lounge chair, as there was enough space for one out there. It was lovely to relax on.