1) having glasses and trying AR/VR is the worst. Thankfully I can use contacts but it sucks otherwise. Glad Apple is doing magnetic lenses.I want to dive into AR or VR to experiment, but (1) I have glasses and (2) I've heard too many people talk about vomiting after playing some games. So I figure I can wait it out until I try it without buying first.
For 2) for some reason this actually has gotten worse for me on my Quest 2. And it absolutely is a problem for some games. Especially games that don't use any teleport or blink mechanics. The mismatch between what your eyes see and what you actually experience can lead to nausea for some people (exact same reason behind sea sickness).
And what sucks the most is that the nausea can last for hours after you remove the headset. But this is entirely individual and depends on the app.
But it's why I just stick to a select amount of games I know don't make me nauseous like Startenders or Cosmonious High. Both of which I hope come to Vision Pro with better graphics.