Angry at ADHD Husband - Not Understanding Priority Setting

I am a 38 f married to a 39 m. We have been married for almost 15 years and have two children. My husband was diagnosed with ADHD about a year ago when I brought up my unhappiness with the house work load balance. We've worked to put some things in place to help accommodate these issues, but the biggest issue that I have in the marriage is the lack of priority setting. For a large majority of my relationship my needs don't seem to be important to him. I have tried to make sure I express my needs verbally in an easily understood manner and use key words and phrases like, "This is important to me"... and " I need this..."  We don't seem to be making any progress with this portion of our marriage. When he expresses his needs and wants I feel like I have to jump through hoops, but he is so unfazed.

An example of this is our upcoming anniversary. In the past I have planned almost all of our vacations alone. We've always tried to have a short vacation for our anniversary, just the two of us. Last year we agreed to go to the mountains, we discussed the location, all I needed him to do was find a place. We had an agreed upon weekend, where we could make it work without taking the kids. He simply just didn't do it. So the week before we were supposed to take this time for our anniversary. I find that he just didn't do it. And it's not that he didn't have the time. It's just that he prioritized other things instead of taking the time to do it. We also run into this issue when I ask to make plans and then one of his friends asks after that to make plans. Usually he will cancel with me, let me down, and do what his friends ask. 

I don't find this to be a symptom of his ADHD. I find this to be selfishness and that he deems other things more important. I guess it wouldn't hurt so bad if I felt like it wasn't intentional, but I don't think when you tell someone that something is really important to you and they understand that and do the opposite anyway.