I don't envy you if you're coming from abroad, the hurdles the locals are likely to have to jump through are bad enough, you could end up getting stuck abroad if your country suddenly puts a block on travel.
Also you've got the political silliness between countries in Europe, and the game of one-upmanship going on between Scotland and England, which means Scottish requirements are likely to be more restrictive than elsewhere in the UK. I'd leave it late to book anything.
If the govt cop-out again on a decision about entry requirements to gigs, your entry is at the whim of the venue, who may not have a system in place to accept your paperwork, or require you to show an nhs app which you won't have. I envisage a lot of ticketholders are going to be left watching it on youtube.
If the Wembley euro requirements are the template, it would put me off bothering going to far away gigs, there's far too much to go wrong. At least you can get a beer though without having to look over 40 or produce a passport, like in the land of the free.
It needs to be put back to summer 2022 imo, there's too much uncertainty at this point in time to go ahead. Can't see the Genesis machine getting into gear with all this cross border uncertainty.
There were some figures out recently that 45.2% of the hospital deaths with the delta variant in a certain period, had had one or two jabs already, which if the trend continues puts us back to square one.