Frankly Melissa is laughing all the way to the bank. I thought the movie was funny in places poignant in others. I would see it again easily. With all the phony, pretentious movie making, this to me just looked like fun. Fun to watch and I bet it was fun to make.
Tammy starts out a minimum wage, screw up. I have seen Adam Sandler do comedy in the same vein. He is brilliant at it and so is she. Then it progresses and deals with a woman who is forced to face her issues and grow up. So there was a recovery sense to it, and for the drunken Susan Sarandon too. It was very funny and human. I love Kathy Bates, and was happy to see her in it also.
So don't watch if you don't want to, but I loved it. I giggled and felt for a lost person, who starts to gain insight. All of the negative reviews really are people's opinion. Mine is I loved it!! Also it cost 2om to make and grossed 84m. She got a cut, so I am sure she loved it too...
Take your negativity elsewhere, I would watch anything she did.