Funnygran
Not unreasonable at all. We went to a wedding earlier this year and the music was so loud that it was quite painful. We found a side room and escaped in there with a drink. We were quickly followed by a fair number of guests and not just the older ones! Much more pleasant and better for catching up with family we don’t see a lot of.
I absolutely hate this at weddings, where there’s nowhere to escape to. A sister in law and I once had to go outside, in the drizzle, in order to be able to hold any sort of conversation without yelling at each other.
Last wedding we attended, dh and I, plus my two siblings and their spouses, all left shortly before the dinner and disco, and had a nice civilised evening elsewhere. Of course we did tell the B&G well advance, so they had 6 fewer dinners to pay for. I doubt they cared at all - there were plenty of their own generation there.
Dh and I had the added excuse that it was also our own wedding anniversary.