The Event Registration form is now using Boostrap classes, which is great! The only problem is that we use Bootstrap too and the layout gets tricky. Essentially in the out of box Event Registration part it includes 2 columns to pad the left and right sides of the event registration form. This looks great when the layout is full-width, but our websites have a side-menu layout which makes the extra padding unnecessary. This is fixable but this means each time a new SP or Hotfix is installed I have to edit the file and remove the classes again. Can the column classes could be removed from the display.ascx file and to just let the users control the layout in BBIS admin.
This was shipped in SP17. Try it out and let me know if the change we made solved your problem!
This is currently planned for SP17. We are planning to change how we pull the default styles, with the intent to get more out of the way of your own bootstrap styling.
Samantha McGuin
Principal Product Manager, BBIS