In theory, there's 3 days between Robbie and KOL waiting for someone to fit in. Unless it was merely a banner and there wasn't necessarily the plan for all five days to have acts performing.
It was an odd gig at Manchester Arena back in 2019. Looked sold out and we had floor seating tickets pretty far back. Turned up and they bumped us up to about the 10th row out of nowhere.
It's a lot of tickets, not least at the insane prices the Stones are known for charging, but I reckon enough people would've gone to at least 3 shows at Tottenham, maybe 4 at a push.
Very much like the 7 festivals in 7 years now, but Glastonbury quite rightly counted towards the 7 festivals back then. As did taking on the extra responsibility of being a supervisor.
I personally think they have made an ill judged decisions in how returning stewards quality for priority in future. Experience counts for a lot.