Just to update you on this:
After FIVE email exchanges with Thomson I succeeded in getting the answer to my first question, which was "What's the baggage allowance?"
Because it wasn't clear I booked an extra 5Kg each to bring it up from the potential 15Kg to a manageable 20Kg. It now turns out that we have 25Kg each, because the original allowance was 20Kg. This, apparently, is not refundable. As I said in my response:
If I have paid for an additional 10 kilos we would be able to bring back two stuffed camels, several cowboy hats, and several hundred “Made in Corfu” condoms.
All this because they did not send e-tickets (three times) and couldn't answer the simple original question.
Hint: when booking, print all pages - ALL pages - and stare hard at the baggage allowance. You will NEVER see it again.
I have carefully made my bag weigh just over 20 kilos. Expect a rant shortly after arrival.
The good news is: assuming the appalling weather here allows take-off and landing, we're leaving for Yamassland in the morning.