No problem.
But in this case, you will have to pick them up at 10h40 on the 27th dec, (arrival TG 104), until possibly a little later then.
They will tell at that time what they want to do.
On 28th, your program.
On 29th, they will take TG 2117 at 15h25, so, they may only need you to drive them to the airport. Just discuss with them upon their arrival.
I have given them your two telephone numbers.
Best Regards
Franck