Congratulations on delurking and making your first post, dwrek99. 😀
Mistress Kassandra is indeed retired and Mistress Zara is no longer taking on new clients, but only seeing her regular clients these days.
I would suggest that you call the Hidden Chamber (where they both used to work) a few days before you visit.
http://www.thehiddenchamber.com/welcome.htm
Explain to the phone woman there exactly what you want and ask which Mistresses will be available the day of your visit. There is no charge there for the consultation. That is, if you show up and meet the Mistresses on duty but don't care to have a session with any of them, there is no fee.
I can't recommend specific Mistresses there any more since I haven't been there in over two years, since Mistress Zara became an independent Mistress and left there.

🙄
😛Hi everyone,
I've been a lurker on this forum for quite some time, and have decided it's time to step up and finally experience some of my fantasies. I will be traveling to New York sometime next month, and would like to find a mistress with the ability to completely break me (through extreme bondage and tickle torture of course!). Can anyone suggest any dommes they know of that posses a sadistic love of tickling and bondage and the ability to completely break me? I've read stories of Mistress Kassandra (retired), Mistress Zara (?), Mistress Regan Black, and Mistress Mia (Hidden Chamber). Anyone else? Thanks, and Happy Holidays.
i had thought Mia had retired shortly before getting married? or is there another Mia at the Chamber now?
Retired, Kassandra? Is that just being tired or is she 65 and eligible for social security?🙄
😛
TTD
I have a feeling there are multiple Mias. Here is the Mistress Mia that has been tickle-torturing me recently:
http://www.thehiddenchamber.com/mistresses/mia.htm