I have never attended a Science Fiction Convention; many years ago I used to attend some comic and gaming ones.
I was searching for my favorite author Phil Foglio to see if any books I have missed and found this.
Most of the conventions he attends are on west coast.
The World Science Fiction Convention (Worldcon) is held every year but on years when it is not held in North America the NASFiC is held.
https://www.wsfs.org/conventions/
https://buffalonasfic2024.org/
Alan Dean Foster, Author Guest of Honor
Nilah Magruder, Young Author Guest of Honor
Kaja & Phil Foglio, Artist Guest of Honors
Tony and Suford Lewis, Fan Guest of Honors
It is being held at Hyatt Regency in Buffalo.