I'm sorry to say that I just found out I need to join the OATS club

and need your advice and expertise ... your help and advice got me through the drilling, and I just learned on Friday that I now need OATS...
I had drilling of an talus OCD (7mm x 9mm x 5mm deep) back in October 07 and since I'd say January, the pain when walking has gotten worse than it was before the drilling.
We took an MRI of my ankle and it did fill in with cartilage, but my OS said that the quality of the cartilage matters and that it must be soft and that is what is causing my pain as he doesn't see any other reason I should be in such pain. Just to make sure though, he gave me a shot of lidocaine in the joint and said if I didn't have any pain, then the pain was definitely the OCD ..needless to say I had the best 6 hours of the last year and walked like a human, went up stairs like a human and pain free for those 6 hours (but boy did I pay the price when it wore off - yikes!)
I need to go back to my OS to talk about details but what I do know so far is that I will need an osteotomy and he said a cast/NWB for 8 weeks and he will be taking the plug from my knee.
For those of you who had this, can you help me with the following questions:
1- how long were you kept in the hospital and how did they control pain? (for drilling they kept me overnight and gave me morphene shots in my hips every 4 hours .. don't want that again.
2 - for those of you who had drilling ... how does the pain compare to that?
3 - Did you go from a cast to a boot? and if so, how long for each?
I honestly don't know what questions to ask him as I was not only stunned from hearing this, but partially excited that my foot felt so good with the lidocaine in it.
If anyone has a list of questions they put together that would be great as I honestly don't know what I don't know.
Thanks you all for your help once again ... I was hoping not to join this club, but looks like I will be a member