If the number of rooms needed on the Event widget is > 10, then the search string should go to Groupize.
TEST NOTES 2MAY17
In the widget snippet we cannot accept 10+, as the + causes the widget not to render. This is not a problem, as the user will select the number from the dropdown.
However, currently the maximum number of adults is not being governed by the limitation of 4 guests per room (which is the norm). The maximum number of adults should be the number of rooms x 4.