Since Hotel Booking version 3.7.2, you can make the number of adults and children change dynamically based on the guest’s search parameters and keep the tiered pricing set via Rates.
For example, in the previous version, if the accommodation capacity was two adults and one child, the room wouldn’t appear eligible for a parent with two children simply because there was a “one child” limit in the settings. In reality, a bed for an adult could be used by a child – and even vice versa in some types of properties.
The new plugin version allows you to bring more flexibility to this restriction by designating three separate capacity limits: for adults, children, and the total “capacity”.
This is a little bit different from using the “Guests” field since you can still have a tiered pricing rates system for children and adults separately. The rate will be updated dynamically based on the number of adults and children the guest chooses at checkout.