The G2G Collection destination club looks different from its competitors from a number of angles: None of its properties are hotel rooms. No annual fee is required for membership. That membership can be shared by more than one party. But by far the most distinguishing feature of the club is its charitable component. Half of the $15,000 initiation fee is paid in the form of a tax-deductible contribution, and 5 percent of each nightly rate is redirected to the member’s charity of choice. Since G2G sold its first…