I get it. My grandmother is older than you but her balance hasn't been good for a long time. If I fly with her, I insist she get wheelchair assistance in the airport because I'm afraid she's going to fall or get knocked over. I had her get an Apple Watch for the fall detection. Between that and the Alexa's in her house, it makes me feel better, though she kept my cats for a while this summer, and my cousin was terrified my cat Ella was going to trip her (not that my grandmother would have let that stop her; I think she likes the cat more than me). I understand physical therapy can help with that, though maybe not get you back to golfing.
I don't do golf, and I'm not very good at mini golf, so I will take your word for it. Other lil bro (we're not actually related, grew up together and are very close; he calls my mom "mom" in addition to his own mother, I've called his parents in emergencies, if we had kids, we'd be aunt/uncle, etc) definitely deserved the needling about it, though.
I do feel bad for him because he bought a snowboarding pass (I don't understand what the fun of it is, but okay) and he didn't go to Busch Gardens this year with us because he had to pay for that. Whelp, now he can't use it, has to get a medical note so that they'll hold it for him for next year. Right now he's in a sling and can't do anything.
I had surgery on my right ankle in September and still can't walk more than 10-15 steps, so we were walking around a shopping center, him in a sling and me on the knee scooter. He said "anyone asks, we're gonna tell them that they should see the other guy."