In the event you leave your key and lock yourself out, do not panic. Just head over to reception and inform the staff there. Someone from the reception team will come and let you back into your house. If there is no one in the reception, ring through to Storthes Hall Park on 01484 488816 and someone will come from there to let you in.
If you are unfortunate enough to lose your key, you will need to inform the reception team and you will be required to pay for a replacement key.