He was supposed to spend this week partying in Vienna but Mrs Brown's Boys star Rory Cowan delayed his Eurovision trip so he could vote 'Yes' tomorrow.
Rory booked his trip last year when Conchita won for Austria but had to change his plans when the date was set for the marriage equality referendum.
"I was supposed to go over on Sunday - last year I was at a Eurovision party down at the Grand Canal and we booked the hotels and the flights for this year straight away," he told the Herald.
"We said we'd go to Vienna but then when I realised the vote was coming up. I cancelled it so I'm losing a fortune but it doesn't matter.
"I've been able to get a flight out tomorrow afternoon so I can go and vote first thing in the morning and then head over in the afternoon and be there for the weekend," he added.
With voters heading to the polls tomorrow, Rory says he is remaining positive about a victory for the 'Yes' side.
"I hope it'll pass, I really do," he said.
"I think Ireland is a brilliant country to live in because they change laws on the basis of fairness and equality and this is just another step in it.
"I think the people will do the right thing tomorrow because they're fair."
However, he believes that children being brought into the debate is causing "apathy" among voters.
"I think people who are bringing children into this referendum are just using them and then when there's a big problem with children, they're not focused on it," he said.
"This whole referendum has turned into being about children when it has nothing to do with them.
"They're using something that it's not connected with and it's just causing apathy," he added.
The 55-year-old is an ambassador for Childline and says he'd love if those involving youngsters in the debate would focus more on children's welfare.
"I'd love if the people who are saying the referendum is about children spent as much time working for children's welfare," he said.
"I read a story during the week about the percentage of children going to school hungry - that should have been a much bigger story."