Singapore is really a clean and safe country to visit. However that being said it is also one of the strictest countries to go to where there are hefty penalties handed to those who break the law. This is why it's also nicknamed a "fine" city; literally they'll slap a significant acceptable for anyone flaunting what the law states. That being said, you can even find harsher penalties to take note of such as imprisonment as well as death! Therefore, although Singapore is a superb place to visit, there just some considerations to make sure you do not do while in Singapore. Here are the 3 major things not to do.
1.) Bring, sell, or consume illicit drugs
Singapore has the maximum sentence from the death penalty for anybody caught with illegal drugs. Although some may reason that the sentence depends upon what amount of the drug you've you, or what type of drug it was, it is still plain foolish to try your luck to test these theories out. The law is extremely strict for just about any drug offenders and there are no exceptions given. Therefore do not be stupid and produce, sell, or consume any illicit drugs in Singapore. It's just not worthwhile.
2.) Litter and vandalize
A primary reason why Singapore is such a clear country is that they have tough laws against littering, and vandalism. This is really one of things that made Singapore popular in the international news when they sentenced an American, Michael Fay, for vandalism and theft within the 1990's. And you understand what his punishment was? The sentence was a few strokes from the cane in his rear end! So make sure you show some courtesy by not littering. Actually this courtesy should apply to all over the world you go!
3.) Caught chewing gum
On contrary belief that gum is illegal in Singapore, this is actually a myth. You can chew gum in Singapore, but simply do not get caught littering your used gum by spitting it onto the sidewalks. In Singapore you can actually purchase gum at select pharmacies for the sole reason for dental only use. Therefore you don't have to stress out when gum in Singapore. You need to simply exercise some common sense and discard it responsibly into the trash bin.
Singapore is a superb place to visit. It's safe, clean, and has endless things to do and see. One of many reasons it is able to achieve such a clean and safe environment is through its tough laws. Therefore all you need to ensure would be to exercise some common sense and merely respect its laws, and you will be fine.