In court filings, Tom's attorneys acknowledge many of the transactions that Liesel alleges, including the giveaway to the Pritzker Foundation of her 5% stake in Hyatt hotel chain parent H Group.

FORBES: Pritzker Vs. Pritzker

In an effort to harmonize these efforts, sustainable tourism heavyweights including Rainforest Alliance, the United Nations Foundation, as well as travel groups such as Expedia, Federation of Tour Operators (FTO) and Hyatt Hotels have joined together to create the Global Partnership for Sustainable Tourism Criteria.

CNN: Giving something back