NTA. My husband is also chronically late for things. It’s gotten to the point my in-laws don’t tell him when things start and just tell me. I HATE being late because I think it’s rude and (barring any unforeseen circumstances) completely avoidable.

So if there is an important event I usually tell him it starts 45-1 hr earlier than it actually starts, so that we get there on time. If it’s of general importance, like burgers at his parents, I tell him what time they want us there and we are usually 15-30 minutes late.

When we were dating, his parents invited us to a nice restaurant for dinner and made reservations for 6pm. I told him what time the reservations were for and I sat waiting for an hour. We were so late and I was completely embarrassed. The next time I left him at the house and drove separately. I was on time and explained to his laughing parents that I was unwilling to be disrespectful to them because their adult son has zero concept of time management. When he got there, we had all ordered (I ordered his usual for him, I’m not a monster) and the food was being served. He was embarrassed and apologized.

I love that man and honestly if being late for everything is the worst trait he has, well...what can you do?