Interim Conservative leader Rona Ambrose had already spent several days on a billionaireā€™s yacht when she wrote to the federal ethics commissioner to make sure her holiday wasnā€™t breaking any rules.

Ambrose was on a yacht owned by oilsands financier and Calgary Flames co-owner Murray Edwards from Jan. 3-14 as it sailed in the Caribbean.

Back in Ottawa, her Conservative colleagues blasted Prime Minister Justin Trudeau for vacationing on the Aga Khanā€™s private island.

Ambrose wrote to the ethics commissioner on Jan. 12, the day Trudeau admitted to using the Aga Khanā€™s private helicopter to reach the island.

The ethics commissioner said Ambrose didnā€™t break any rules and didnā€™t need to disclose any details of her holiday.

While still on the yacht, Ambrose tweeted that Trudeau couldnā€™t resist ā€œthe billionaire lifestyle,ā€ and linked to a story about the prime ministerā€™s vacation.

Ambrose tweet

The Prime Minister's Office confirmed last month that Trudeau, his family and a few friends vacationed on the Aga Khan's private island at the end of December. They also flew in his .

Under the Conflict of Interest Act, ministers of the Crown are not allowed to ā€œaccept travel on non-commercial chartered or private aircraft for any purpose unless required in his or her capacity as a public office holder or in exceptional circumstances or with the prior approval of the (Conflict of Interest and Ethics) Commissioner.ā€