For any extra information you may need from your customers or extra options they have you can use custom fields. They can affect the price based on conditions and multipliers. Form template

Reservation form

Arrival Date

Resource

Adults

Children

Select

CustomRadioButtons Custom fields can be all kind of different form elements.

Select

They can affect the price regulated by conditions and multipliers.

Check

I'm checked Be checked by default and cost per person.

Slide

Slide around.

Fill out

Or be required to continue.

Personal information

Name

Country