A total of 10 per cent of people admitted that a few too many drinks had led them to post things on Facebook or Twitter, which they later regretted.
And 11 per cent said embarrassing photos of themselves drunk had found their way on a social networking site and had ultimately had a negative effect on their lives.
FebFast co-ordinator Catherine Milburn said the survey was a good indication of the relationship between people's drinking and their behaviour.
"We can see that for some people, having a few too many drinks ends up with them saying or doing things they regret," she said.
"But the survey also shows that most people - 70 per cent - don't need to drink alcohol to make a good first impression on a date."
Last year's FebFast campaign brought in more than $100,000 and it is expected that this year's event will be just as good.
All funds raised this year will go to several charities: Rainbow Youth, CareNZ, ADHD Association and Wellington youth organisation Evolve.
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