But a church spokesman, Doug Watt, said that speculation was false.
"This is incorrect, alcohol was not discussed."
Mr Watt said the Church regularly organises fellowship meetings for its members so they can get together to learn more about the Bible and enjoy each other's company.
"We have a lot of younger members who enjoy getting together at these fellowship occasions to meet up with their friends and participate in the meeting," Mr Watt said.
He said it was not the first time Mr Hales had visited Whanganui and it would not be the last.
The Plymouth Brethren was a mainstream Christian Church and its members have been in New Zealand for well over a century.