Lawrence Convention Center Friday and Saturday. About 3,000 people were expected to attend the event, which featured about 150 different vendors and included several panel discussions with industry leaders on topics like the use of cannabis to treat opioid addiction, the medical benefits of cannabis among professional athletes and children. Among those in attendance included former Eagles offensive guard Todd Herremans and Lindie Snider, a medical marijuana financial investor and daughter of the late Ed Snider, the owner of the Flyers and former chairman of Comcast Spectacor. The event was co-hosted by Greenhouse Ventures , whose mission is to assist in building a successful and sustainable cannabis industry by accelerating the growth of startups that service the industry, its website states. A major theme of the conference was education. Since Act 16 was signed into law, legalizing medical marijuana April 17, 2016, some marijuana have felt in the dark as to how the new laws might affect them. For many, the expo was an opportunity to shed some light on the subject. We wanted to provide a platform for people to be educated, said Dr. Bryan Doner, CEO and medical director of Compassionate Certification Centers.