The Office of Fair Trading says it received very few complaints over short measures for pints of beer during the TT period.
Under Manx law, all customers are entitled to a full pint and a campaign to enforce that message was launched last year, after some issues during the centenary TT in 2007.
Anybody who receives less than a full pint is entitled to ask for a top-up.
Chief inspector for trading standards John Peet says efforts will continue to ensure traders are complying:
Researching your Manx family history can be a very interesting and rewarding hobby. Trace your roots in the Isle of Man with our helpful of guide.
