I'm not really a resort person. But I do subscribe to some travel feeds mostly in the vein of maybe finding some places/attractions/restaurants/etc. that I'm not familiar with. The number of hyper-scheduled spreadsheets I see is amazing. Doesn't mean I don't often have some itinerary and even book some particular, popular attractions/venues. But the 30-minute block scheduling is something I do for work (if that).

ADDED: I'll just add that I created a loose spreadsheet for a ~week-long NYC trip with (I think) just one timed admission for a recently reopened museum and no times otherwise. I think I ended up dynamically scrawling over the printout with changes for most of the trip.