Prepare in advance, and listen to the suggested reading/audiobooks and then do some of your own research to bring to the table.
Turn up looking the part of an agent who would be tasked with selling a £1m+ farmhouse, be smartly presented but don't be afraid to take inspiration from the Gentry, yes I mean Tweed. Let your personality show, as you will be building a brand off the back of this.
Prepare for the mock door knock exercise, which if you find yourself blindsided by you'll either flake under pressure or risk falling in to well rehearsed cliches, you're there to win the interviewers contact details, so if they're searching in area, get them to send info over to them, if out of area use it as a way to capture the lead to put in to the Referral System.
Do your research, come smart and prepared.
Do your homework on the industry leaders, listen to podcasts and get into self development, that is [what they are all about at Fine and Country, becoming better people while helping others move.