The towering lock, who featured in every game as Wales clinched the Grand Slam, will tie the knot on the Greek island of Santorini on June 7.
But he will put the champagne on ice to join Wales in time for their second test with the Wallabies.
“I told Gat’s (Warren Gatland) during the Six Nations, he was really understanding and said family comes first. I had been out of the international scene for a long time when we booked it.”
And despite some initial pre-marital disagreements even Evans’ fiancée Angharad has come around to the idea – even if she has to spend the honeymoon alone.
“When I mentioned to her that this scenario might arise, I made a run for it out of the kitchen and waited for the pots and pans to come flying through!
“I get married on the Thursday, sign the legal papers the next morning and pretty much fly straight to Australia.
“I don’t think it’s any bride’s dream to have their groom flying away the next day. She’s staying out there on her own with no groom, just family and friends.
“I can’t wait to celebrate a nice day getting married but then I’ll have my missus in my ear as I’m getting on the plane!
“She’s a little bit devastated but fully understands. In professional sport you have to take your opportunities when they come.”
It has been a remarkable turnaround for the giant second-row, who had spent the best part of two seasons battling a succession of serious injuries.
Evans made his international comeback in the December friendly against the Wallabies and has started every game since as the Dragons roared to the Grand Slam.
He has had an equally impressive campaign on the domestic scene and for the first time in three seasons has been an ever-present feature in the Ospreys side that claimed the PRO12 title on Sunday.
“The Australia Test gave me the huge confidence boost I needed,” added Evans.
“Before that I wasn’t fulfilling anywhere near my potential but that game gave me a kick-start.
“It’s been a real whirlwind and if you had said I’d be in this position at the beginning of the season I would have laughed.
“I’ll be drinking orange squash on the wedding night, it’s just one of the things you have to sacrifice for the game.”
But before the wedding bells ring, Evans has the small matter of a clash with the Barbarians on Saturday.
He will then jet to Australia, via Greece, and the Ospreys star is well aware of the battle on his hands to reclaim a starting spot, with Bradley Davies and Luke Charteris set to pack down in the first Test.
“I will have a battle to get back in,” added Evans.
“That’s one thing I can accept. I hope it does go well for the boys and that they win the first Test to lay down a marker.
“If that happens and I don’t get back in I will fully understand and I’ll have to take it on the chin. That’s just the way life goes really.
“But I’ve shown what I can do and if I’m lucky enough to get another chance, the responsibility falls on my shoulders.”
