I remember going to ASTRO as a med student completely clueless and alone and wondering around the vendor section and talking to the C-rad people like they were somebody I needed to impress. it's painful to think about how clueless and more importantly, mentorless I was. I paid a fortune out of pocket for the hotel and the university rad onc department never reimbursed me for the poster I paid $100 at Kinko's to have printed for them. They literally ghosted me when I asked how to get reimbursed. Which I now think is funny because it's the most academic rad onc move ever. The only thing better would have been a response telling me it was unprofessional to ask.
That being said, I don't attend ASTRO as a physician, and I certainly wouldn't as a med student. My CME funds are used for conferences by people who don't hate me in more interesting locations. ASTRO head and neck in scottsdale is fine though if you skip the conference and play golf the entire time (highly recommend Quintero).