Hi, There are seats but no rail on stairs. It is a small garden to be honest and not very rocky but to see some small parts you need to go up to the stairs. I would say you will enjoy bird songs but you wont be able to see all area.

$80 from the DoubleTree. That included the Garden of the Sleeping Giant and the Hot Springs/Mud Pool.

I also booked the tour through a guide so cannot answer your question about the entrance fee. It was a wonderful visit as the gardens are very beautiful and peaceful. I would definitely recommend going there. The guide explained in detail about all the orchids.

You can spend as much time there as you want if you're really into nature and flowers. There were a few tracks for hiking and there was a café in there but not sure can't remember exactly what they served.

An hour is plenty of time. But consider that you will be very sweaty when you are done.

I'm not too sure, but they do have a website and the opening hours are all there.

I very much doubt it. Generally in Fiji they only take their own currency.

We had rented a car. You can easily take a taxi. Or? It’s only about 10-15 minutes from nadi airport

Fiji has recovered from cyclone Winston, which was in February 2016. I don't know why the gsgfiji website is not currently available, but there can be power can cable issues at times. One option is to contact fiji.travel to see if they can provide more information. We recently spent two weeks there and had a wonderful and relaxing time. The Fijian people are among the friendliest in the world.

Yes there are mosquitoes in Fiji. I traveled there in June/July with my Pregnant wife and had no problems. There has been no reported cases of Zika in Fiji according to the government health body. Arrogated can by bought from shops and chemist in Fiji.