If i am the admin from PTA or taxi companies , i will impose same rate for both Garden by the bay and Int'l Crusie centre , like that no disputes .
Same applies to Tenah Merah Ferry Terminal against Sgp expo .
Or even the whole boundaries of Changi Business Park .
Or at least inside CBP, they create a centralised taxi stand , like those from AP , smaller version , and impose a Taxi stand surcharge there .... those who taking a cab there , pay $2 .