Just for clarification, on the omnipod, suspending is different than a temp basal set to zero. A suspension will STAY suspended until you actually turn it back on. A temp basal of zero will turn back on when the time runs out. This is an important difference to know!
It takes a little experimenting to get it dialed in correctly.
If your work is several hours, you probably don’t want to go zero basal for the entire time.
Just as @bkh said, I would suggest not going to zero. Maybe a more conservative adjustment a little bit before you start work. Try it a few times, see how it works, and then adjust it up or down.
In general, a shot of carbs will be much faster raising your BG than a basal change. So as a bartender, if taking shots of juice is practical, that will be a good thing to have as a backup.
For most of my day-to-day, I use carbs instead of basal changes, since carbs are much faster.