What lenses did I bring, or which ones I ended up using?
I think for most of the cosplay photos, it was either a Canon 24-70mm F/2.8, or a Sigma 85mm F/1.4. I carry 2 camera bodies with me, so I have some flexibility between portraits with the prime, and full body shots or group shots with the zoom.
For the panels, I typically used a Canon 70-200mm F/4 lens.
For my walkabout the town, I used a Canon 17-40mm F/4 lens.