It will have booked up quicker than this year's event, at least in part, because totality touches a much smaller portion of European territory, so those for who travel to parts of Europe is easier (or just feels safer to them) than north africa / middle east and cheaper than Egypt, will have crammed into that area. A large proportion of the eclipse spotters in the Shengen region will be booked into that area rather than the much larger tranche of Spain 2026's eclipse touched. I suspect this is a more significant factor than FOMO after missing this year's because people often plan this sort of trip more than one year in advance, precisely because of the expected demand closer to the time.

Staying a few hours drive or public transport away may still be quite practical, though it is at a time when many take their summer holidays so anywhere even vaguely touristy in will be more expensive that week even without the special event.