You have to see the registrar separately so they can check you aren't being forced into the marriage.
In my area you have to pay 3 months before, we get married in August and have to have paid the registrar by May. I've never heard of paying on the day. I would suggest you ring them and ask these questions, once we had booked they sent us a confirmation letter explaining what we needed to do to give notice and when the payment was due.
I don't think you do this interview on the day of the wedding??? We gave notice last week for our wedding in a hotel in may and were interviewed separately then. They told us they will send a letter closer to the time so We can pay then and not on the day.
Hi could some one help me on how you go around booking the register office I just don’t know where to start I want to get married the 5th October this year I don’t know if I’ve left it to late or how I go about doing anything x