“It’s hard for the crowd to get involved when we’re not playing very well and we’re letting in tries for fun early on in the game.
“When you have a good start to the game, that’s when you can start bringing in your home fans, you can start playing better.
“The boys then feel the energy, and it just brings a bit of momentum to us. You’ve got to start well and bring the crowd into the game.
“The fans give us so much energy, especially against Scotland. That was an unbelievable feeling being on the pitch with 70,000 people cheering for us.”
Rees-Zammit returned to rugby from his bid to crack the NFL last summer and has since won just one of his seven Test appearances.
Wales led until the 75th minute against the Scots and were 12-10 down at half-time in Dublin and were down by a score until a 76th minute penalty.
“The past two games, we should have won them both, but they were against two very good outfits in Scotland and Ireland who have been together a long time,” insisted Rees Zammit.
“We’re just building and, I said it after the France game, we’ve just got to start trusting each other and we have really started to do that for the last two games.
“That’s why we’ve been able to put performances in that have been exciting, not just for us playing but people watching as well.”
