A few things I'm wondering about:

What would be wrong with sex on Sunday mornings?

Sex just isn't worth doing if her attitude is less than ideal?

Maybe the tissues help her feel more willing to participate?

Sex just isn't worth doing without afterplay the way you want it?

How important are the hotels--6 weeks out of 8 years--in the broader scheme of things?

Did anything in particular happen or start 12 years ago such that sex got so much less frequent?

What does your therapist say about the situation?