She's probably not inviting you because the women all got together at one of their meetings and decided they needed to hide this from men, lest we ruin it.
It'll take all day and cost you about $250 when it's all said and done. Pick somewhere nice, fancy as fvvk hotel over the water. It was my first time, but I wasn't messing with some Asian place next to a liquor store or anything like that. Book a massage for the afternoon, show up hours before it. Go alone so you can indulge in doing whatever the hell you feel like all day without worrying about. Lounge around in rooms designed to be relaxing places to be, go back and forth from tubs with jets to showers to lounge chairs to pools to whatever your body is drawn to...it sounds like just being lazy, and it is, but it's much more than that because of the environment and all the water. I didn't drink, just read a book and enjoyed how unbelievably happy and at peace I was. Of course the professional massage is the highlight activity, which to me beats sex for rarity, being focused on me alone, and leaving me feeling better after. I've had all the sex, I have not had enough professional massages. After that you can just lay there. Then lay somewhere else. Then go in water, then different water.
It is the exact opposite of waking up and taking care of all the bullshlt that is maintaining an adult life. Warm water, pleasant lighting, light music, the only people you interact with are there specifically to make you feel good in some way...
I left feeling like my body had been melted down and reformed, and knowing that this is something I do now.
Something tells me Subway probably knows what's up.