I went to a few hockey games when I felt "borderline" up to it - as in, I felt about 85% confident, plus I had a lot of motivation to start getting out and attending things and seeing people. I used my walker because it gave people a visual cue to give me a little space and I also sat in accessible seating where available because it gave me a bit of breathing room. So if you are still using aids to walk, I'd highly suggest bringing them. And my wife did the same your husband is suggesting - dropping me off at a clear
, short path to the door and then picking me up again.
It's pretty exhilarating to get out into the big world but it can also feel a little....much, so don't be surprised if you have moments of "whoa....this is kind of a lot!" Especially if your son is at an age where hockey games become very intense. No standing and getting red faced and pounding on the glass while screaming at the zebras, OK?
One other aspect of being out and about that was tiring for me was continually assuring people that I was doing well, recovering nicely, etc. They mean well, but nobody really wants to hear a full scale report on all the glorious little ups and downs of recovery. All that smiling and cheeriness and attention kind of wore me out - I don't know how celebrities do it.
Have fun and hope your son has a good game!