Bigcecil - that's my typical play at every R&T. When I go to the 2 spots a frequent, they already know I'm coming in for a double...one at the start and one at the finish. In my opnion, it makes the massage much more enjoyable because you're starting off relaxed. With the language barrier I typically lay on the back and tell her I want to go 2 times... give a little jerking motion with the hand and tell her I'll take care of her when we're done. I smile, wink and even take her hand if she's close enough. I also give at least an extra 20 on the tip if they give me the double to keep them happy and for me, it's worth the extra 20 for good services. Even if the massage is so/so, I'm still getting 2 shots off.
And following what Drumasss said, if I go for a table shower, I always bring it up there. When I go to my place in NJ, the TS is where number 1 usually happens...
Not sure where you planning on going but I know we've talked about H.C in Northampton... Haley has no problem with the double, even for the 1/2hr session.
Bottom line is if you don't ask, you'll never receive. I've been turned down before but I'm running at least an 80% win/loss rate.
Good luck my friend.