The one thing I have learned over the years of attending Cisco Live is that you can't see everything in person. I have tried to fill up my schedule in the past and it only leads to confusion because of being bombarded by so much information at once. Try to concentrate on one or two topics that are important to you like switching, wireless, security, management, etc. Leave yourself plenty of time to explore the World of Solutions, where Meraki has a wonderful booth which is staffed by very knowledgeable people and great demonstrations. The best classes for studying for the Meraki certification are ECMS1 and ECMS2, which are available online and in person, but not offered at Cisco Live. One more pro tip, don't schedule sessions too early on Thursday morning, because the Customer Appreciation Event is Wednesday night and depending on how good of time you have, early Thursday morning might be a little rough 😉