SMART is a lot less rigid than AA. They provide a good framework for dealing with addictive behavior but (at least in the meetings I have attended) not much pressure to complete the worksheets. In one meeting, there was someone there who I felt really abused the looseness of the rules. He was (supposedly) trying to quit by slowly decreasing frequency. In a year, he had gone from having two days between days that he smoked weed and drank to having 3 days between. And he bragged that several months ago he had gone a week once. So that meant he had no physical detox issue. In my mind, he had not started quitting at all. There is very little doubt in my mind why he was at SMART and not AA.