Tandy will experience a second World Cup after suffering an early exit in 2023 when defence coach of a Scotland side that went up against South Africa and Ireland.
“That was a genuine group of death and the format was tough,” he said.
“We played a game on the first weekend and then didn’t play again for two weeks, then we had to go and beat Ireland by eight points if we were to get through.
“I do like the last 16, we have seen at football World Cups what that brings and that is an exciting addition.”
Wales should progress and if they stun England then would go up against the runner-up of Pool B, which features world champions South Africa, Italy, Georgia and Romania.
If results go to form, the winners of that tie would face a quarter-final against either Australia or Japan.
A second-placed finish for Tandy’s men would lead to a last-16 fixture against the runner-up of Pool C, which includes Argentina, Fiji, Spain and Canada.
If they lose to England and also suffer an upset against Tonga but sneak into the knockout stages then it would be a tie against a pool winner.
Tandy is quick to stress that Wales are not in a position to be getting ahead of themselves.
“I don’t think we can take our eye off the ball and start thinking too far ahead,” he admitted.