This itinerary provides details for a 4-day 3-night trip to Singapore, including transportation and activities. Day 1 includes a night safari tour at the Singapore Zoo. Day 2 consists of a half-day city tour of landmarks like the Merlion Park. Day 3 features afternoon activities at Sentosa Island, including the cable car and underwater aquarium. The trip concludes on Day 4 with a morning at leisure and afternoon departure flight. Hotel and package pricing is also included for 3-star and 4-star accommodation options.