Every day, Lisa posts births, marriages and deaths from her database onto Facebook - and has quite a following. On a typical day, her database will report ten marriages but for today (25th December) that number has soared to 68. That's data from Victorian times and the early 20th century, and the database does not pretend to list everyone with Melksham connections who got married - there are those out of area who ran away to Greta Green or had civil weddings, and a number of church registers are not yet published due to the 100 year rule and it taking a long time for registers to fill - but it does give a good comparative.
Whilst civil marriages were posible from 1837 onward they were still quite unusual back in those days. Many people didn't consider themselves "properly married" unless a clegyman was involved.
It would also be very difficult to list everybody with connections to an individual place because, amongst other reasons, the practice of sending young women off into domestic service, and that might not necessarily mean that they stayed local to their original area. One of my great great grandmothers spent some time as a servant in London, despite being born and bred in Cheltenham, and indeed returned there upon her mattiage. Given that Cheltenham was full of pretty well-heeled people in the 19th century, one could fully understand somebody knowing of a position in London for a parlour maid or whatever, and making an appropriate recommendation. I wouldn't be at all surprised if Bath attracted teenage women from around the country for the same reasons. And of course, some may have found a suitable bloke in their new part of the country, got married and stayed put.
Similar considerations applied to some young men who set off to seek their fortunes elsewhere, such as one of my great great grandfathers who migrated from Sweffling, Suffolk to Longhope, Gloucestershire, sometime between 1851 and 1861.
Why did so many people get married on Christmas Day? Was it casual marriages of people who had got inebriated on sherry left out for Santa? Was it men making honest women of partners while everyone else's eyes were turned to Christmas? Neither of these - with so little holiday from work, Christmas was about the only time of year that the whole family could gather to help the happy couple celebrate, and perhaps the only tim they could slip off for a couple of days honeymoon in nearby seaside resorts such as Severn Beach, Barry or Clevedon.
Whilst I can see some of your logic about Christmas Day being a day off, so was every Sunday (if being forced by convention to go to church three times a day in both examples would count for many people as a "day off" even then), and I suspect Christmas Day weddings had more to do with religious significance than anything else. There were very few casual marriages indeed back then because divorce was not really possible for anybody but the very rich (hence the old saying "marry in haste, repent at leisure")
Also bear in mind that the vast majority of married women didn't work in those days (indeed, in many professions women were expected to stop working when they married), so there would always have been a pool of mothers and aunts and sisters who would have been called upon to deal with all of the arrangements. And as regards time off, many people could get time off quite easily (agricultural workers, for example, generally had a slack period from late Autumn until early Spring, and some may have been laid off anyway). The main issue, and this was the case even up to WW2, was that people generally didn't get paid leave. In general then, for the majority, honeymooms were low-key and fairly short affairs, if indeed they happened at all.
And to be homest, nobody in their right mind would have gone to Severn Beach on honeymoon even if there were any guest houses in the area. It was really a
GWR▸ construct in the 1920s and always concentrated on day trippers from Bristol until that trade generally dried up in the 1960s. Only the wealthy would have considered a holiday at the seaside, and if they were wealthy in our neck of the woods, there were better places to go than Barry or Clevedon