To go to the St. Paul's Ruin, take the number 3 bus and get off once you see the pink building. Sorry, I am not helpful. :P Everything is walking distance from there.
We were able to watch a free light show in HardRock Hotel. The show runs every 30 minutes from 12noon to 7PM. It was very convincing. It scared my dear sister. She gets easily scared anyway. It is a must see for kids and kids at heart. I am a retard so I enjoyed it, BIG TIME! :)
Outside the Venetian. If you are a big fan of the Korean Drama Boys over Flowers, this is the place where one of the lead guys played an instrument and earned money. No entrance to the Venetian as it is a casino. You have to be of legal age to get into the actual casino though.
Macau is an hour away with Turbo Jet from Macau Ferry Terminal. The fare is cheaper on Weekdays and in the Mornings. We paid, 134 HK Dollar to Macau and 176 HK Dollar from Macau for each person. The ferry leaves every 30 minutes til 5AM. I think, If I am not mistaken, they have a 24 hours service. If you want to go to the Venetian, they have a free shuttle bus from the Airport. They must have one if they want more people to go to their Casino cause Grand Lisboa is just a stone throw away from the Ferry. We didn't know they have one until we went to the HardRock Hotel. That's where we took the Shuttle Bus to the Pier.
If you are planning to go to Macau, please go to this website - http://www.olamacauguide.com/macau-travel.html