Never saw the video until moments ago on GMA. From what I have seen from Brides on wedding day, it was totally believable for me -- just one of those high maintnance people.
I've seen bridal meltdowns too, but from close experience let me say many brides are calm and happy not at all bridezilla like. When my daughter got married the wedding planner and I were beginning to stress. Not the bride. The cake was MIA, the florist was 2 hours late, the DJ was having issues, the caterer was confused. Bethie just smiled shrugged and said "I don't need flowers to get married." or "We can have someone run to the store for cake for the pictures".
My favorite was a sweet sigh and a smile with the words, "that's alright", when she'd be told something else wasn't as we ordered it. You'd have thought she was medicated or something. She was so happy that nothing fazed her. Funny it all turned out beautifully and no one was ever aware of the things that happened before the event. So brides, just enjoy your day and show us those videos.