Way back in the 1980's we stayed at one convention and booked privately, not through the society.
When we went down for breakfast we were asked if we had booked through watchtower. I said no we had made a private booking.
We were then shown into a lovely breakfast area and were served a beautiful full English breakfast with all the trimmings, tea, coffee, toast etc. All this was included in our room rate.
Later, in another area of the hotel, a congregation friend showed me where he and his family and all the watchtower guests had been served breakfast.
It was a large featureless room with just the bare essentials. A piece of toast a bit of cereal, all served by sour faced, unfriendly servers.
As I walked out I heard one server say to a colleague, 'I hate these watchtower people, they are a complete pain in the arse!!'
I realised that I had made the right choice, and never ever again booked through the society with their so called 'special rates'...to add insult to injury, these obedient brothers in this horrible large breakfast room had paid MORE for their stay than me!