I use entity forms on my site.

They work really well as it use the field api.
You can also make use of feature such as "field populate via url" and "entity reference field pre-populate"

Would it be possable to have a bookable formlet that can post to a url that can populate your desired fields.
Maybe a token url string that gets populated and posted when you hit the book now button.

Thanks

Comments

fietserwin’s picture

You can submit the form to any URL you like and all information is passed either via POST variables or via a GET query string. So, what else would be needed?