Alcoves were a complete waste of space on my transatlantic. In 16 days I saw only one time did anyone have one in use...and they weren't actually there just had their things on one.
Also the lawn club grill was empty at all times except the few days they did lunch there, not sure if that was at a discount. Normal is $40pp.
The glass blowing is awesome though the fact that they can't sell the items sucks. Otherwise you could request something in the colors you want, see it made, and pick it up later. Celebrity donates to Corning so they aren't allowed to sell. They do auction(for charity) 3 items off but it's whatever they pick.