The group gathered afterward at the home of Harry's father, Peter Morton, the Hard Rock Cafe cofounder.
TMZ broke the story ... Harry was found dead in his Bev Hills home last Saturday. The L.A. County Coroner has since revealed the restaurant tycoon suffered from coronary artery disease. He died from a heart attack brought on by blockage in 3 main arteries.
Harry, who founded the popular Pink Taco Mexican restaurant and food truck chain, grew up in the Hollywood scene and once dated Lindsay Lohan.
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He worked with his father when he started out, but eventually struck out on his own ... following in the footsteps of not only his father, but his grandfather, Arnie Morton, who was cofounder of the Morton Steakhouse chain.
The Morton family has announced plans to start a foundation to help battle heart disease.