We travelled on Thomson cruises many years ago and thought we would give the Explorer a try. The itinerary and timings suited us. We booked an inside cabin as we rarely use balconies preferring to spend time either ashore or on deck. We did upgrade to the premium class flights and a premium drinks package.
The ship was extremely busy which we anticipated. However, we did not expect some of the children on board to be unsupervised by their parents/grandparents to such an extent as to make the cruise unpleasant. Despite 'No Diving' signs on the pools the children continued to do this which can be very disconcerting to older guests and also potentially dangerous. I rarely saw a lifeguard around the pool to stop this practice.
As a vegetarian I found the food awful. For example, a vegetable pie with the crust extremely hard and the rest of it raw and uncooked. We did ask to see a chef and he did come down to see us but was not particularly helpful. What shocked was when he admitted he didn't taste any of the vegetarian dishes. A couple of the restaurant managers said the same thing. The vegetarian option for Christmas Day dinner was mushroom crepes. Surely something more seasonal and exciting could have been offered?