I’m really stuck. So I’m getting married on a Friday in 2021 in...

I’m really stuck. So I’m getting married on a Friday in 2021 in Manchester and obviously need a registra but they only have set times 11, 2 but I want it more like 12 or 1. I know it’s only an hours difference but it’s completely going to ruin the way the day run! It’s so far in advance is there any sway (you can book 2 years in advance). Do I have to get the registra from the city council is there any other way. It’s really upset me (bridezilla I know!!) Was also thinking of signing it all the day before but family said ‘you’re not actually getting married on the day then? What the point in spending all that money?’ I didn’t think I minded until they said it out loud. Ideas or info about early weddings, too long, too stressful? Anything would help! TIA x