JCT, pleassseee do not mention those patisseries - I get fat just reading about them. Your trip sounds just great
I really do not think I have ever suffered jet lag - most flights from here are at least 14 hours , to the USA, and about 20 to the UK.
I have always made it a point that I do whatever the time of day in my "new"country suggests I should do. If it is breakfast time when I think it should be bed time , well, I have breakfast and remain active all day until it is local bed time. Either that works or I just am lucky and do not suffer jet lag.
The only king of jet lag I have is the lack of the opportunity !!! because I just love airplains - I could just sit and watch them at the airport for hours given the chance. God Bless Gwen