Host responsibility is at the forefront of organisers' minds before the Middlemarch Singles Ball at Easter.
Seven hundred tickets recently went on sale for the two-yearly event, including 300 for the Tui Love Train.
Dunedin City Council events team leader Marilyn Anderson said with 700 enthusiastic people attending the "Some bunny loves you", themed event, being mindful of everyone's safety was important.
To that end, people would not be able to take alcohol on to the train and the amount available for purchase on board would be managed by Surf Lifesaving New Zealand as a fundraiser, she said.
More vehicles driven by sober drivers would also be on standby to ferry people to their accommodation or homes in Middlemarch.
"It was an issue highlighted to us since the last event."
There had already been one inquiry from an Australian woman about attending and a large contingent was also expected from the North Island.
Three events would be held during the weekend - a Blue Light disco for children on Thursday, April 9, a locals' night on Friday and the singles dance on Saturday.
Tickets had increased by $15 to $85, which included the train fare, and $50, and usually sold out about a month before the event, she said.
They were available from the Dunedin Visitor Centre.
