A couple of things that I would say, “sad to see” rather than appalling. At the end of the day, the bride and sometimes the groom have a wedding that represents them, so most people will look at things and say, “well you know her, that's the way she is”. I have see or been involved with over 300 weddings. Very rarely are guests surprised by anything. Even a drunk bride who can't stand up or a fighting family that causes uncomfortable moments, guests kinda of know it.

So, to answer your question after that premise. Two moments come to mind.

One wedding I remember.. A bride was Soo upset that the DJ had a brief electrical issue during the first dance. That she went into the bridal suite and would not come out for about 2 hours. To me that's just beyond acceptable because, sure your first dance got ruined, but to ruin the rest of the party was sad to see.

The other one that really stands out was a bride wanted open seating. Fine. I don't recommend that for a bunch of reason, but not a big deal. But she wanted people to mingle and dance and I guess get in a work out, because she also wanted 75 seats for over 100 guests. I could not convince her all the things wrong with that.. which I don't have to get into cause it's a long list. Needless to say, it was a major cluster f**k. I tried to have extra seats available, but the way she wanted the room set up, there was nothing I could do. So many guests were complaining and blaming us, the banquet hall. Including the parents of bride and groom, older guests and wedding party who ended up without seats because naturally they were the last arrive. I didn't throw the bride or groom under the bus. I just simply told people the bride and groom are happy with us and have not complained. We executed their vision. Please enjoy their day.