Christchurch lawyer Andrew Riches, one of Gilmore's dining companions, confirmed he'd left a note at the hotel the next morning apologising for Gilmore's behaviour, which he said was "rude" and "disgusting".
Gilmore allegedly called the waiter a "dickhead'' when he refused him more wine and gave him his business card saying something like "Don't you know who I am? I'm an important politician''.
Gilmore resigned from Parliament 10 days later, saying staying on would cause further upset to his friends and family.
Gilmore initially denied the claims but then issued an apology via Twitter and a later press release saying: "As a group of diners our behaviour was at times boisterous, and I sincerely apologise for any offence this may have caused to staff and/or patrons''.
"I intend to convey my apologies on behalf of the group to hotel staff, and understand that Members of Parliament should uphold, and be seen to uphold, the highest of standards at all times.''
