✔ 最佳答案
for Q1 and Q2, i heard from my friends that is quite good.
for Q3 you can search it in
http://www.visitmelbourne.com/displayObject.cfm
this website provide many tour on different place.
for Q4, metcard have different type, metcard can use all kind of public transportation EG tram, train and bus(except V Line)
2 hrs
1 day pass
weekly pass
monthly pass
yearly pass
10 times pass (city only)
you can see this in
http://www.metlinkmelbourne.com.au
on the other hand, you have to choose it in
zone 1
zone 2
zone 3
zone 1+2
zone 2+3
zone 1+2+3
in city, there is a tram which is free "city circle' color in deep red, which only travel around the melbourne city, it takes about 40-45mins.
http://www.melbourne.vic.gov.au/info.cfm?top=140&pa=1560&pg=1562