If you are coming by Taxi, here's what you can tell the uncle:

TripleOne Outlet:

"TripleOne, it is the old PUB building, opposite the Com Centre."

100AM Outlet:

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"100AM, drop at the taxi stand along Amara Hotel."

If you are coming by Somerset MRT [NS21] to TripleOne,
click below for directions:

If you are coming by Tanjong Pagar MRT [EW15] to 100AM,
click below for directions: