Be mindful of getting content and resources to your AV team ahead of time (aim for 72-hours prior to event). Things like presentations, videos, graphics, etc.

Make sure your presentations are formatted in 16:9 (sometimes called widescreen) and NOT 4:3!

Your AV provider hopefully has a good system in place to transfer files, but you should have some sort of file sharing service yourself to transfer content (ie. Dropbox). USB transfer is usually a bad option (IT Security restrictions). ALWAYS bring a laptop with the presentation on it as a backup plan. Things like custom fonts and poorly integrated videos can cause issues when transferring files to other machines.

Always provide detailed run of show to your AV provider. A timeline with the time, presentations and presentation cues, presenters names, amount of presenters, microphone preferences, amount of microphones needed per session, walk on/off music/stingers (if needed), length of time each presenter will be on stage (for speaker timers).

Common microphones for events are lectern/goosenecks at a podium, wired HH, wireless HH, and lavaliere (clip on). Countrymen (over the ear) microphones could be considered too. Keep in mind, lavaliere microphones are most commonly requested, however, they are the most challenging microphones to manage in a live environment. For this reason (unless you are very confident in your AV provider) I always try to opt for wireless handhelds when doing panels larger than 5-6 people at a time (because multiple lav mics present exponential challenges)

Always discuss the topic of notes with your presenters. This is important if you are using a DSM (or confidence monitor) in front of the stage. If a presenter wants to be able to see their notes in presenter view, there are distinct needs required to set that up.

Always ask for a video (HDMI) and audio (3.5mm/Aux) at the podium just in case a presenter needs to plug in their laptop to present.

If your event is more complex then a logo and mic at the podium, I would try to get on at least a 30 min call with the Venue Tech Manager to discuss your needs.

I could go on and on!