Former Great Britain Rugby League international McGinty twice appeared at the old Wembley during the 1990s - with contrasting results.
The Backs & Defence Coach at Sixways was part of the Warrington side that painfully lost a cup final 36-14 to Wigan in 1990 before returning just two years later for Wigan and securing a 28-10 Challenge Cup win.
McGinty knows the Warriors will have a spring in their step at the stadium, being backed by thousands of Worcester fans, and acknowledges keeping focussed will be vital.
"Playing at the new Wembley is fantastic for the team. A chance to play at a stadium where you might never get the chance to play at again," he said.
"It was something during my Rugby League days that everyone wanted to do, it was always an ambition of mine and I was lucky to do it twice. I didn't get nervous - you have to try and take in the occasion and secure a big win.
"The most important thing is to win there. The difference between winning and losing at Wembley is huge. When I lost at Wembley I just wanted to get out.
"My first goal was to play at Wembley, but when I lost it was to get back and win as soon as possible because you might never get another opportunity."
McGinty also recalls how, during his Wigan days, the team were even encouraged not to look around as they walked out to try and concentrate on the task in hand.
He added: "The coaches used to tell us not to look at the crowd, not to wave at the family. You have to focus on the game and nothing else - that it the message for our players on Saturday.
"I still remember when I walked out and across the running track. All you could see was thousands of people at the far end looking back at you.
"I'm now looking forward to going back and seeing it. You watch games on the TV and it looks fantastic and I just hope it has the same atmosphere and draw of the old venue.
"The atmosphere used to be electric. You used to stand at the end of the tunnel waiting to go out and hear the noise - it seemed a long walk.
"The big message to our players for the Saracens game is focus. It's a big day and we need to make sure we do our job and get a positive result."
