It sounds like a great pivot.
You can target people on Linkedin and Facebook based on industries and job titles. Linkedin advertising is more expensive than Facebook (around 5X more for a click on average ) but cost per conversion (booking) is a far better metric to use so if you’re running campaigns across the platforms make sure you have measurement set up in the form of the Facebook Pixel and Linkedin Conversion tag – or/and google analytics.
Think about your lowest hanging fruit – maybe start by marketing to companies in the main centres who have easy access to Queenstown via direct flight links, and businesses within driving distances as opposed to all of NZ.
When you get a bit of of traffic going to the corporate training page (at least 100 people), create a lookalike audience of those people and target them on Facebook.
You could also make a target list of companies, and use LinkedIn to search for the HR and admin people in those companies & request to connect to them so they can see the content you’re sharing about the corporate teams participating in your zone.
I would also consider bidding on Google search keywords of those people searching for team-bonding and corporate activities.