It has been 7 years since I've been to Singapore and that trip was arranged by my sister. I'll be on vacation there with my girlfriend next month who hasn't been to Singapore. So far, only Universal Studios is in our itinerary. I'm confused with the Sentosa attractions when I checked Klook. Not sure which attractions we should definitely go. Any recommendation? Jewel will either be upon arrival or before departing Singapore. Will be there for 4 days and 3 nights.