@Troy9 Read reply / comment below if still relevant !)
You guys are spending way too much time over this...
Yes you are allowed to deny entry. No it’s not your fault & it’s the guest responsibility. (Read here more especially if check in time is listed and if you warn the guest to please be no later than let say 11pm, with or without follow up from guest and regardless of any other issue beside legitimate reason with proof for the extenuating situation/circonstance that forced guest to arrive late or could not reach out).
Yes Airbnb customer care & resolution must be involved as soon as concern for a no show or potential past deadline check in or if any other issue may rise. So the guest get to be aware of AirBnB policies and keep the pressure off of you. (This have the added benefit of giving you the proactive & responsive position of a responsible & good standing host).
Reservation can get to be canceled in your favour by AirBnB resolution center case manager and your chosen cancelation policies (strict or flexible may/will abide).
In the end airbnb will let you the option to let the guest check in the next day at check in time or let you refuse that guest for the rest of the reservation for not being a respectful considerate guest (eg. no communication, trying to barge in at 1:30am after few drinks with friends instead on focusing to check in first before going out for the evening, not thinking it may be odd and uncomfortable for you or other guest to wake up to a stranger (if apply) or the potential for noise, etc.).
More to say, if you have self check in this whole thread would be irrelevant but in any case, setting up guidelines, communication and feedback between host and guest is key.
Even if at time you may be tempted to accommodate every people needs, there is ground rules and extra favours/services shall come at a price... Business is business and time is money.
Thanks for reading me. Hope it’d help and cleared up few questions.
Vincent
Host for over 3-4 years now and still counting~