If you do not use a confirmation code system, just leave that field blank and press confirm. This always works for me. Simple as that!

Agoda do not release guest contact details.

I do this with booking.com all the time for private villas. The key is to ask booking.com to set up rate level occupancy for you. For example - a four bedroom villa which has pricing for max 8 persons, max 6, max 4 and max 2 - so four prices for the same property/room. It is set up that way by booki...