Long lines were building up around 2pm in front of one of the main gates at the F1 race track. The gates opened at 3pm and the heat was unbearable. It helped that this was my second time at the race and we were actually picking a different entrance that the one at Singapore's City Hall MRT station, where most people were waiting to be let in.
Practice Day is a relatively easy day. Not that many people show up for it, but a friend had a ticket for Friday only, so I walked him around as much as possible.
Unfortunately my friend did not follow my advise and bought one of the cheapest tickets available...Friday only and in Zone 4 only. While Zone 4 gives you a lot of entertainment options, and access to the nightly concerts, the views of the race track are very limited with a walk around ticket. You got to have a ticket for the grandstands if you want to see anything, otherwise you will have to squeeze in with many other people at those limited points where you can actually see the race track. Mind you, with a "premier walk around" ticket you get get onto the platforms which are put up, specially along the bridge over the Singapore River, which gives you a great view too. But at the end of the day my friend was disappointed with his buying decision and swore that he will buy a different ticket next year.
While Porsche Carrera Cars practise during day light, the GP2 Practice is happening at twilight and Formula One first and second practice will happen during and after sunset.
I used my own ticket to sneak off into the other Zones of the race track to "test" out the best positions for me to see both the Qualifying and the Race on the following two days.
There is plenty of food, drinks (and drunks) as well as entertainment options on day one already. The stars get more exciting with the other days (at least for me) but even Practice Day can be pretty exhausting and typically ends at 23:00 for the race activities, while the music goes till after midnight.
It's a nice day, without the huge masses of people pushing you through the limited walking routes.