Hi! this is what my itinerary is looking like can’t decide if to add more days in Paris to do day trips to close by cities or go Belgium (never been). Going in December so looking forward to the Christmas markets. London we are going to one week so gives us time to explore and day trips if we want to.
December train to Strasbourg from Paris airport
Stay four nights in Strasbourg , day trip to colmar
Train to pairs (stay 4 nights)
Train to Belgium (2 nights)
Train to London ( 6 nights )
I spent about a month in Belgium this summer. It has a lot of attractive cities. But two nights is a very short time to allot to an entire country. If you haven't been to Paris before, I'd vote for adding the 2 nights to Paris.
If you dont have a need, using points or cost or schedule, flying into Frankfurt might be a better start.
I would first plan out London and Paris to some detail before considering Belgium. Depending on yout interests and if this is your first trip to Paris you could easily spend 6 days there with few or no day trips. Its the holiday season which for many is best spent at a slower pace.
If you come back you might get more input eit more detail. Where are you coming from, have you been before, actual travel dates and even age and of course interests and what you enjoy.
But looks like a fine trip to some wonderful holiday destinations.
