Talk to IT Before Installing
If you use your Mac for work, you may want to talk to IT before installing mojave. This is often a requirement if it is a work supplied laptop, and still a great idea if you use your personal Mac to do company work with special apps or web services.
There is a chance that these apps and services will not work on macOS Mojave or in the new Safari, and IT will likely know this because they tested on the beta or on a developer preview.
Instead of running to them if you have problems after the fact, ask before you install to see if they know of any issues. It is not uncommon for problems with Enterprise software to pop up in the first weeks and months after a major release.