My tips for Universal Studios Singapore:
Get/Use a Mastercard - its their preferred payment method and you can pick up some good ticket deals by having one
Once through the turnstiles, turn right and head for SciFi City and get into that Transformers queue. It should be no more than half hour if you arrive at opening. This queue can get up to 2hrs, so get at least one ride in early.
After Transformers, hit up BSG. Cylon was my favourite. Free lockers for this one.
Next ride around the ring is The Mummy. Awesome dark coaster. If you don't want to carry your stuff, leave it in the BSG lockers. The ones at Mummy aren't free.
Jurassic Park comes next. You will get wet on the river ride, be warned. This ride typically has the longest line any of the times I've been.
Waterworld is a good fun show. If you sit towards the front you can get wet.
Far Far Away land is nicely put together. Puss n Boots wasn't open when I was last there. Donkey Live is a fairly fun show.
Madagascar Crate Adventure is a nice way to relax for a while, but not worth lining up any more than 15 minutes for.
I always go to Mel's Diner for lunch. If you time it right, sit outside and catch the performers on the stage.
The walk from VivoCity to Universal doesn't take that long. You'll need a $1 coin or an EZLink card when you get to the island.
The first time I went, I stayed at Hotel Ibis at Novena. It was a nice quiet part of town, about a 10min walk from the train station. The breakfast wasn't included in my price but I paid it for both mornings I was there. My next trip I stayed with a friend at Swisotel at Central - very business focused but comfortable enough, and would gladly stay there again. Last trip I stayed at Hard Rock Hotel at Sentosa, and probably would've preferred the Swissotel again.
Most hotels in Singapore will have universal power points, but not all so be sure to take a travel adapter. If you need multiple devices then also pack a powerboard. Also, put a Pen in your carry-on - Singapore has an arrivals card to fill in, and you need to keep a piece of it to hand back in as you depart. Flights to Australia require your duty free alcohol purchases to be completed at least 90 minutes before departure, so if you have a 1am departure, be sure you've shopped before 11:30pm.
If you see yourself doing a lot of public transport whilst in Singapore, grab a 2, 3 or 5 day Tourist Pass. They cost around $35, you can get them from the Ticket Counter at the train station at the airport (Counter only, not machines). If you hand your card back when you leave, they give you $20 of it back. All depends on how long you'll be there for and how much travel you plan to do.
Cable Car is kinda cool, but IMO not worth the money they charge for it - particularly going up Mt Faber. I still haven't managed to see the crane show, but I really want to.
You'll find most places in Singapore use Turkey Bacon. I found one place that did though, and it was a cafe run by some Aussies along Clark Quay - a good place to head if you're really keen on bacon and eggs for breakfast.
I did enjoy heading up the Marina Bay Sands to the observation deck and getting a look at the city from up high. The Gardens by the Bay are quite nice to wander through as well. Raffles Hotel is near Central, once there head upstairs and look for the Long Bar I believe its called. Once you've had a traditional Singapore Sling you can definitely taste the difference when you get the alternative. Be warned that they're expensive, around $26 last time I went.
Be sure your phone is not network locked before going over if you intend to grab a local SIM. Their plans are often quite cheap, but the initial SIM can be expensive. The last time I went I was on a Vodafone Post-paid plan, so I activated the $5 a day roaming plan and used my domestic inclusions whilst overseas.
Biggest shock I had of Singapore was actually on my way out - when you get to Changi Check-In Desks, don't be alarmed if you see Army officers with machine guns on patrol.
I flew with Scoot every time I've been. They have weekly specials on Tuesday mornings until around 11am. They fly from Gold Coast Airport around 9am, landing into Singapore around 3pm local time. The return flight departs around 1am Singapore time, landing into Gold Coast around 7am.