If only it were that easy. First of all, he would never promise to not drink, but, if he did, he would just drink anyway and hide it. Then if I asked him if he was drinking he would say no. I cannot trust him. He has no desire to stop drinking. When I say he has been doing well, I mean the past few times I've spoken with him, he hasn't been drunk. It has also been fairly early in the day.
His behavior is unpredictable. I have held my breath through other parties, not just 4th of July and it is very stressful on me to have to monitor everything he does. I also don't trust him to not drive home drunk. He lets his girlfriend drive and she only has her learner's permit. If they got pulled over and he was drunk, with her driving, it would be bad. She would probably not even be able to get her license.
Believe me when I say I feel terrible about this. I will give you one example of how he gets. He was at his dad's on Father's day and they were talking about a dog that lives down the street from his dad. They said that they wished the owner brought the dog inside more often. My son gets up, starts getting all mad and asking for their address. He was going to go knock on some stranger's door and yell at them about a dog he does not even know.
He has done embarrassing things like that many, many times here. The list is too long. I would be here all day. I always just try to get through the day. I just don't feel like I can do it this year.