I just found a story on STOMP that is indirectly related of us, I think.

Lack of rubbish bins ruins scenery at Marina Barrage

See the time and the date.
Hmmm.

So...
the rubbish there is most probably ours unless another group of people went there after we left, ate McDonalds also and left their rubbish there during the next 2 hours.

K bye.

My flava was expressed on 6:41 PM