No chance of me getting the vaccine before the game date but I would go if I could get a ticket - I have had covid and it was unpleasant but I got over it fairly quickly. I would not go if in a high risk group or shared my home with anyone similar.
Opening the world up solely to people who have had the vaccine probably isn't going to work given it looks like the younger working population are the ones who won't even be getting it this year. I can imagine longer term that countries might make vaccination a condition of entering their borders (especially if they've managed to get their own levels down very low), but I can't imagine how they could enforce an immunity passport type situation within a country for different activities, it would just be too much an infringement on people's freedoms and it would mean only people over 60 can do anything.