The user requests 2 rooms on the initial page and is then presented with room types to select from on step 2. The arriving and starting dates will always be the same, but the number of adults and children may differ, causing the price to fluctuate.
Now, if JS is enabled I think I'll just program it such that it's tab-powered and when you hit 'Select' which is an input submit, it'll cancel the form submit and mimic a "add to cart" functionality, so the user must select at least one room for each specified.
I'm confused on how I should treat this with JS off - should I just enable radio buttons or checkboxes and have the user select with radio buttons per room? So instead of "Select" button image it would be just a label "Select this" text and a radio button nearby, and at the far bottom of my form there will be one primary submit button.