Tottenham are not Arsenal though. Man City struggle to fill their stadium and while Spurs are old firm are they going to get 60k a week?
Yes, they won't have a problem, and lets stop pretending that some how we're magically better than Spurs. You have season ticket waiting lists, etc.
The massive majority of our extra income came from outrageous seat pricing in executive sections with better seats, more boxes, more facilities, more business facilities, etc. This is something very few old stadiums put even the slightest bit of thought into accommodating and almost every modern stadium puts massive effort into. Conference centers in spaces under stands, restaurants, business offices, better facilities for treatment, etc. Spurs will be extremely unlikely to struggle to fill it, but the main thing is filling up the executive sections and giving richer fans and businesses the option to wine and dine customers by taking them for a game, meal and meet a few players kind of thing. That's where it pays for itself for Spurs and for us.
Wembley is a crappy stadium imo, it's a bad location that is a pain to get to, it's a longer trip for a lot of the more local fans and has a huge gap to the pitch, etc. Fans going less this year doesn't mean they won't go back next year. Also with season tickets coming back it means people buy season tickets to ensure they get tickets for say Spurs Utd and to be better placed to get tickets for Utd vs Spurs, most clubs give preferential buying to season tickets for higher tier games. That means fans buy season tickets again to ensure getting the games they want thus filling up the stadium so they don't miss out.
While you can't get a season ticket it's much less of an issue to go well, I just won't go to Spurs vs Cardiff, but when you have to get a season ticket and you have a ticket already for that same game so you're far less likely to skip it. Regardless they'll have paid for the ticket either way so doesn't really matter.
They aren't going to have issues and the stadium won't only pay for itself if it's at 99.999% capacity every game. For us, if we filled the executive level then we could have had 20k seats not filled every game and we'd still have made more than the debt payments are.