@FlipFlopBattle I love the idea of a website i can add timings to so that people know what the order of the day will be. That's going to be easy to text around a link.
And delegating - I've one SIL who doesn't have a role in the wedding, is organised and assertive and I'm sure she would be happy to help me keep an eye on timings for me.
@TalkingCat Not in the UK either so why would I have an English style wedding? The format I've described is the norm here in Ireland. Here, it's common to have guests for ceremony+reception dinner, and then if you've colleagues/ acquaintances they generally drop in for a night out of dancing and finger food if they are around, it's not a formal invite where you'd expect an rsvp and you'd certainly not expect a gift of any kind. You'd be going in after your own dinner so you wouldn't expect food until the cake, sandwiches and hot buffet comes out at 10.30 or so to keep you going.
The place I'm having the wedding is a small island with one venue. Considering that I'm blowing in for two nights it seems rather rude to boot residents out of their own local for the duration so the bar will be thers as they wish and after the meal, they are more than welcome to drift in to the reception hall, grab a drink and food and party with us as they wish.
I don't know why Irish weddings evolved that way but I suspect family size plays a lot into it. It's not uncommon to have 10+ siblings between both families, and when you count those, spouses, kids, then just aunties and uncles, some cousins plus a few family friends/neighbours of your parents, you could easily be looking at 150+ so very often your own wider circle of people you know just can't be invited - particularly if parents help pay a chunk of the wedding and therefore also therefore wield clout on the guest list.
I've never seen a split invite in Ireland. That's when you invite people to the (free) ceremony to fill the church nicely for your photos then expect them to prick around for several hours to return then for a bit of finger food having missed out on the main meal. You'd get torn to shreds in Ireland if you did that and rightly so. I think my mother would disown me.