This is really nice experience compare to Malaysia airlines because they don’t have good vegan food. I have feel little bit of tiredness because of timings of the flight. we take off at night and reached to Singapore in 5 hours. in this time they serve food and we have it and may be take 3 hours sleep. we have 18 hours layover time. and I love it. because I can explore Singapore. and we did it by free bus tour. its really great experience. to keep me awake I had taken 3 coffee which costs SGD$6 while I had taken one coffee in city while going on tour. where I found nice shop and cost of same coffee was SGD$2. later on we come back and find free place to sleep. and we get it on changi airport in terminal 3. its really great time with Singapore airlines.