Planning a wedding is REALLY tough work. There are just so many components that at least a few hiccups are pretty much inevitable. You can only hope that things go relatively smoothly. So how would you like it if a bunch of wedding crashers showed up on your big day? You probably wouldn’t be too happy. But then again, there are always some exceptions to the rule. Maroon 5 decided to crash several weddings and surprise the newlyweds with an unforgettable performance.