Brett Prebble has received many messages of support since riding Green Moon to a surprise win at Flemington on Tuesday, including one from the man he doesn't normally enjoy seeing.

"The reaction has been surprising," Prebble said.

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"I had an SMS from my dentist in Hong Kong. He's a Chinese fella from Hong Kong who knows that I've won the Melbourne Cup.

"It's become such a small world. This race is a world race, not just an Australian race."

The Hong Kong-based Victorian has even managed to soften the usually strict Hong Kong Jockey Club, which has allowed him to stay in Melbourne to enjoy his win and miss yesterday's Happy Valley meeting.

Prebble would normally have flown straight back on Tuesday night in time for a meeting.

"I was more than happy to go back and fulfil my engagements. But I was keen to enjoy the moment and take it all in, and they said they were happy to let others pick up my rides and let me stay," he said.

"I'll be flying back first thing in the morning. It's still short, but it's sweet."

He used his night in Melbourne for some short but sweet celebrations.

"It's been a bit of a whirlwind. I was in bed by 12, the media was at my door at 6.30, so I had a little bit of sleep there," he said.

Even though he told his wife he would win the Cup and had booked a flight for her, she opted to stay at home in Hong Kong with their two children, aged 10 and eight, who watched the race in the family lounge room "yelling and screaming and cheering".

But while he's had great support from the Hong Kong locals, Prebble doesn't expect any special treatment on Saturday when he saddles up for nine rides at Sha Tin.

After close to 10 years in Hong Kong, he plans to stay for the long haul, with the odd trip home, especially if it's for an Australian Cup or Cox Plate ride on Green Moon.

"I'd come back for any of the majors on him - he's good enough," he said.

The whirlwind continued yesterday morning.

After an early round of media commitments in Melbourne, Prebble was taken by helicopter to owner Lloyd Williams' training property in Mt Macedon, where he reunited with Green Moon for an affectionate pat. AAP