hi @Tracey65
you can answer through ABB messaging system something like : "Dear xxx please keep all your communication with me through ABB messaging system. Regarding your question about xxxx which you asked me by email/sms , my answer is....... "
You are allowed to ask for photo ID at the arrival, from all your guests, including children. You can make a photocopy or photo of their documents or even better just print a form and fill it infront of them. You can also ask them to sign it so you have proof that they did checked in.
In some countries like Croatia, Italy etc... it is mandatory bc we have to register all our guests online to police and our tourist board. We have to write down following personal info:
check in and out dates
name and second name
type of document (ID, passport...)
passport /ID... number
citisenship
gender
country of residence
country of birth
date of birth