Salt Lake City, Utah (CNN) – It's an exclusive ticket: a day-long Utah retreat for high-dollar donors to huddle with Mitt Romney.
A senior Romney adviser tells CNN invitations have gone out for the retreat, which will take place later this month in the Deer Valley resort area of Park City where Romney used to own a home.
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The Salt Lake Tribune first reported details about the event, which the campaign is calling the "First National Romney Victory Leadership Retreat." Romney's joint fund-raising effort with the Republican National Committee is called the Romney Victory Fund.
The adviser said they expect more than 300 of the campaign's "major investors" – major fund-raisers and donors who have contributed $50,000 or more – to attend the retreat scheduled in two weeks.
The purpose of the meeting is to give the select group updates on the campaign, according to the aide familiar with planning.
News of the donor retreat comes days after the Romney campaign announced it raised $77 million last month, surpassing the amount raised from President Barack Obama's re-election effort and marking the first month the Republican effort out-raised the Democrats.
Romney campaign finance chairman Spencer Zwick, who arrived in Salt Lake City Friday afternoon to attend a fund-raising reception and dinner in the area with the White House hopeful, said he was "very pleased" with the fund-raising efforts by Republicans in May.
"You hope for the very best. I didn't anticipate that we would raise more than President Obama did," said Zwick.