They do have g&a, but I think they call it something different. I didn't want it, so never looked into it but friends of mine have used it. I had an epi and didn't have to book in advance. I did have to wait about an hour to get it, but they gave me Fentanyl to take the edge off while I waited for my epi.
There is a tub in your room, if you want to use water for pain and there are yoga balls and you can get up and walk around. But once you have the epi, you need to stay in bed. That's all I know about, but they probably have more that I never got time to use. They do have a big bar that attaches to the end of the bed, you put your feet up on the bar and they can tie a bed sheet to it to pull on when pushing. I pushed in a few different positions, but like the one with the bar and sheet best.
I do recommend pre registering at admitting a few weeks befor your due date. Especially if you want a private room. I was so happy when I arrived and just had to give them my health card and they took me right in, can't imagine having to fill in all that paperwork and answer all those questions while in labour!