I've been IP once and the experience wasn't bad. It was actually quite nice...programs, bedrooms, food, people etc but I was so sick and miserable that I just wanted to go home and crawl into my own bed. It really helped me but there have been many times I should have gone IP and resisted and ultimately turned it down. I don't want to go back. I have done 2 IOP programs with the last one being in 2010. Those were helpful too.