Witnesses

Hi this might be a bit strange to some, but me and my oh are getting married in secret on may 22nd. Can't invite anyone to witness it or it'll start arguments, so I decided to get brave and see if anyone on here would volunteer their services. We live in Yorkshire but are getting married in Dolgellau in North Wales. Not sure of the exact time yet but it will be in the morning. I'm really stuck for what else we can do ?