Since we are planning to visit the Universal Studios Singapore (USS) when we visit Singapore next month, I was trying to look for a way to get a discounted ticket. That's when I found in the Resorts World Singapore website that I can get a discount if I use my MasterCard/ The regular one-day peak pass costs S$74 and $54 for adult and kids, respectively. By using the MasterCard, you can buy the same pass at S60 and $45 each.
The USS one-day Pass comes with a free entrance to the Maritime Experiential Museum. I don't know how much the entrance fee to the Museum is but just the USS pass, you easily get about 20% discount.
I got my e-tickets via email and will find out next month if I really had saved or not. Wish us luck :)