Travel requirements for tax people

I saw a job post for an entry level tax consultant in a public firm and it indicates that applicants must be willing to travel 50% of the time. What exactly do they do that requires a lot of travel? Is it because they have to do a lot of presentations to clients, hence the need to travel to the company site? If yes, what exactly gets presented?

Student here with no experience and is deciding between a career in audit or tax. Could someone please go through what a day looks like for people working in tax (entry level)?