In Law Troubles?

My Mother in law descends on me in less than two weeks. It would be a tremendous understatement to say that I am not looking forward to her visit. Those of you that know me, or have been reading my blog for a while will understand. For those of you that don't. here is a brief synopsis. Apparently my MIL has cleaned up her act since the last time she was here, gotten her self off most of the mind altering prescription drugs that she was on, and I have been cautiously optimistic. Then I remember, that every time she comes, I get cautiously optimistic. THIS time things will be different, THIS time she will actually be a good grandmother, THIS time my children, my husband and I will all enjoy her visit. THIS time, I won't have to drive her to the pharmacy every other day. Yep, THIS time.....
However, then I am reminded that the definition of insanity is doing the same things over and over again expecting a different result. SO THIS time, I'm preparing for the worst with no hope for the best. It dawned on me that like me, some of you probably also have in law problems, too. If so, please share some ways that you cope when your in laws descend on your family.
Right now I am planning book club, two mom's night out, actively trying to book Tastefully simple parties while she is here all to limit my exposure. Any other suggestions are so greatly appreciated. Lots of Baileys and wine is the standard, by the way so I have the alcohol escape covered - and note to self - I don't usually drink. What the hell does that tell you? HELP!