On Harry and Meghan's last day before they become husband and wife, Buckingham Palace has confirmed the Duke of Edinburgh will be attending the wedding.
Although it's been announced Meghan's father will not be attending, thousands of supporters have lined the streets already in patriotic regalia.
As wedding fever grips the historic town, Kings Church International has used the occasion to shape sermons and produce a video for the royal couple.
The video features kids filmed in locations around Windsor with advice, such as to listen to each other and 'not tell fibs'.
It ends with the famous words of 1 Corinthians 13: "Love always hopes, love always perseveres, love never fails."
James Richards is one of the pastors at Kings Church International and told Premier what it's like being a church in a town which is suddenly the centre of attention: "We're very excited to have this royal wedding coming to town, everyone's very excited and I think as a church we just wanted to send our best wishes and I think it's a real celebration of the main message - it's all about love."
He continued: "This timeless truth - it cuts through doesn't it? So I think it is that celebration of love. I think the royal wedding itself represents something very big."
"I know they're the royal family, but it's also a couple celebrating a wedding and also preparing for a marriage, so we wanted those timeless words sent there as a greeting from the church, joining with the nation on this happy occasion. "
He described how many people are wandering up and down the streets of Windsor already with 'picnics at the ready' and that his church has embraced the occasion: "We had a special service last Sunday called 'How Prince Harry and Meghan can have the best marriage ever' and we were looking at how Jesus came to the wedding and how when he comes turning the water into wine there, he brings out the best."
"We've had prayer meetings praying for the couple."
Kings Church International meet opposite Windsor castle so have got a taste of the atmosphere in the last few days: "There's a general buzz of the town" and that "it's been an exciting week and it's been great to celebrate with the nation in this."
James described how there is press everywhere and big screens set up but added that the church will be having a usual service on Sunday.
Speaking of his final piece of advice for the pair, he told Premier: "It's more than just a wedding isn't it? It's the beginning of a marriage."
Stay up to date with the latest news stories from a Christian perspective. Sign up to our daily newsletter and receive more stories like this straight to your inbox every morning.
