We had a last minute booking for 2 guests last night and agreed check in would between 5 .00 and 6.00. After 6.00 we had a message from the guests saying that they decided to stay out and would be with us between 9.00 and 10.00. At 10.30 we then had another message from the couple saying that they missed the bus and would be with us at around 12.00 (midnight!) To save time and further delays we agreed to pick the guests up. Are there any rules that protect hosts against being messed around with guests turning up at all hours?? Where do we stand with this?