England open up their challenge on Saturday against Argentina at the newly-built Otago Stadium.
And having seen his side complete their final training run on Friday, Johnson can't wait for the big kick-off.
"The boys are just ready to go," he said.
"I think it will be a real good game tomorrow and I'm just looking forward to getting going now, I think the whole tournament is.
"It's been quite a build-up in the last 10 days. We trained very well last night. We asked for a pretty crisp and intense session and we got it.
"We've still got over 24 hours, it's going to be a fairly long wait but I think we are looking forward to it.
"It's all about guys individually mentally getting themselves in the right place for tomorrow night."
The 30,500-capacity Otago Stadium boasts natural grass under a permanent, see-through roof - a unique set-up that poses its own set of challenges.
The stadium design generates an electric atmosphere and the anticipated noise is something Johnson has had to address with his side.
"I think it is a fantastic stadium," said Johnson.
"It's a very personal stadium, a great size and the surface is pretty good. It's a different feel at night. With the lights on and the crowd, I think it will be a great venue.
"From what you hear from the previous games it will be very noisy, when there's a crowd in there, the sound reverberates around.
"We've spoken about that and communication on the field."
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