Thank you Micheal.
M Adamopoulou, In your booking.com page. go to 'Property' at the top. From the pull down menu select 'Policies' Scroll down the page to 'Guest information' here you can edit your preferences.
Thanks for the useful tips. Wayne Cahoon, In the booking settings you can make each guest fill in address details, and phone number. I have this set up. Booking .com prefer, as you say, least steps possible for guests to book. I found I was getting bogus bookings or people not even sure if they would make it this far but book anyway.( I have a very generous cancelation policy.) By getting guests to fill in address details I've not had anmore bogus bookings so far.
Thank you Kaiwalsh, I'll check out the WhatsApp. I think I'll push my check in time out to 3pm with earlier check in by arrangement. Oh, I like your "so somebody can give them access" phrase too, very clever.
Thank you Michael, Mosts guests do have a good reason for being late, like late ferry sailings etc. I do believe most would let me know if they knew the inconvenience of waiting for hours. The bonus for guests who keep us informed, is they get a lovely warm fire to greet them in cooler weather.