Today the system supports Adult and Child guests. We have 3 rate tiers: Adult, Child and Infant.
Feature Request: Add Infant as a guest type (or a user-definable guest type) and allow me to create a different surcharge/add-on for that guest type. Pets is an example that works -- I'd be happy if I could just change the name from Pets to Infants.
Yes, this would be good. It should also be a tag in the message system. Right now if a guest books with an infant, the infant does not show on any confirmation emails, which has lead to some confusion.