Which route/airline did you book and which class?

LH
FRA-MEX in C
MEX-FRA in F
return was not available in C, and because it was close to christmas they did not allow SEN premium award

How many pax and how many award miles?
1 pax, 155k miles

How many days/weeks/months did you book in advance?
3 weeks

Have you been able to book your preferred dates of travel?
Yes

Were you happy with the award booking procedure (e.g. online/by phone)? How often did you have to check/call until you got the seats?
Yes, was good. Booked via LH SEN Hotline. In the same call I upgraded my J full fare ticket MEX-FRA to F as well - very convenient :-)