The best way to get any ass ready for hard fucking, (and I mean to the point of balls deep driving where her ass becomes an open orifice of acceptance), is to be cleaned out via an enema first. Not much time to learn how to do this before Wednesday but when time permits look to this book The Ultimate Guide to Anal Sex for Women by Tristan Taormino.
Until then, here is a suggestion for ass stretching and preparing:
1) Get a very good lube. We prefer a pump bottle of �Probe�. It�s made for anal sex
2) Purchase a multitude of very slim long candles.
3) Clean the ass as best as you can, (look online for suggestions but we prefer enemas)
4) Lube and insert one candle at a time. Make play out of it. Perhaps count how many she can get in at first then fuck her for a while and then re-insert and count again trying to add just one more each time.
The thinner the candles, (or whatever it is you use), the better because the difference is very gradual.
Can I ask for something from you for this forum?
Before and after pictures for the ruined wife�s thread.
Good luck and have fun. Looking forward to hearing more.
Vancouver BC, Canada