She knows I've gone, and she doesn't mind. (Army stuff away for a month or so at a time)

She said she would like to go to one, with me, and get a TS and massage, too.

Would most MPs be agreeable to that?

I say take her. I would also say most of the places I have been would not mind. I would add, if there is a place you go often, go yourself a head of time and talk about it after you are finished. I would go as far as ask how happy your wife's end could be. Then you might have to make choices as to just how much do you want her to know.