Do you do press releases?

Hello to all! It's been a while since I've been on this forum. Hope all is well.
I'm organizing a gig with 5 bands on the bill for some website promo launch and I would like to send out press releases to local media.
But this is my first time so I decided to launch a thread on how to this properly.
How much time in advance should bands send them out? How to approach the media? (directly via mail?, or by email? or call first?).
Basically I'm would just like to know what the dos and not dos are when trying to get as much out of my PR as possible.
I'm not expecting any miracles like tens of thousands of people flooding my venue thx to the PR, but it surely can't hurt to try.
Advice anyone?
Thx
I'm organizing a gig with 5 bands on the bill for some website promo launch and I would like to send out press releases to local media.
But this is my first time so I decided to launch a thread on how to this properly.
How much time in advance should bands send them out? How to approach the media? (directly via mail?, or by email? or call first?).
Basically I'm would just like to know what the dos and not dos are when trying to get as much out of my PR as possible.
I'm not expecting any miracles like tens of thousands of people flooding my venue thx to the PR, but it surely can't hurt to try.
Advice anyone?
Thx