Of the ships already sailing only the new Club cabins on Deck 13 on QM2 have shower doors, all other Britannia Club cabins are the same as balcony Cabins.
That seems steep, we've had a couple of trips in Britannia Club but I probably wouldn't pay that much extra.
Is that each or per cabin, for how many nights ?
The upgrade was more worthwhile when the Britannia restaurant was only fixed seatings.