TUI make much of their 787 Dreamliners and we were looking forward to our first flight on one. We found the seats uncomfortable - covered in a hard plastic material made to look like leather. Anyone even slightly above average size will find the seat constricting. The food was a throwback to the 1970s, to where I would have liked to send it. There was no choice of meals. I believe any dietary requirements must be booked in advance. We were served complimentary drinks during the flight. Cabin crew were OK. Inflight entertainment was good, with individual seat video screens. Air circulation was OK and the cabin temperature was set correctly for us.
Customers who could not sit together but chose adjacent aisle seats will find that the rows are out of alignment so you won't actually be opposite your partner. On a long flight this may not be ideal. Choose your seats early!
The flight was boarded in Birmingham by row number, so was quick and more efficient.
Barbados, however, does not have air bridges so they use the old-fashioned "cattle truck" buses from terminal to plane. The resultant boarding procedure is sheer chaos, as there are around 400 passengers to get seated, blocking aisles whilst putting luggage away.
The flight was on time despite icy weather on departure.
One of the main technical features of the 787 is the higher cabin pressure, which allegedly helps reduce tiredness and jet lag. I can't say I really noticed this. The great feature of travelling on a package deal with them on a cruise is that they take care of your luggage from drop-off to ship cabin. You don't even have to go through the airport as you are met airside with coach transportation. Likewise on return though you do have to go through airport security. Return flight was on time. A lot of turbulence mid-Atlantic made life difficult for anyone wanting the toilets, which are totally inadequate for the number of passengers.