Intercontinental's The Lounge is also having a promotion with Citibank credit card: 1-for-1
goodwood's high tea is buffet whereas intercon's is the 3-tier type. so, the best way to decide is:
Let n be the number of people.
If n = 0(mod 4), go to Goodwood.
If n not = 0(mod 4) but n = 0(mod 2), go to Intercon
[Actually it's not =, it's equivalent sign... the 3 strokes one]
0(mod 4) means the remainder when divided by 4 is 0 i.e. multiple of 4
0(mod 2) means the remainder when divided by 2 is 0 i.e. even
In English, it means "if even go intercon unless multiple of 4 in which case we go goodwood"