Use the Con Program and plan out your day. Have a backup in mind in case you can’t get into that panel. Pack a survival kit that includes water, aspirin, Sharpies, band aids, chargers, and snacks. This can help you through the longest of panel/signing lines.
Most of all, have fun. Be patient with your fellow con-goers, take pictures, and drink plenty of water! Have tips of your own? We would love to hear them!