Even though you can ask questions at the end of each presentation, there is nothing like an open discussion with your peers and the presenters of all of the sessions. Ask any question. Join in with the discussion. You may have an answer that will help someone else. In past conferences, attendees often get as much value from these open discussion forums as they do from the presentations themselves. If you don’t feel comfortable asking a question with the microphone, you can do it through the conference app anonymously. Either way, this is a great opportunity to have those nagging questions answered once and for all.