OK. I bit. Pun intended.
I visited that site... clicked on a few of their excursions reading the descriptions and, if the rest of the excursions descriptions language is as challenging as the three I visited... they need professional help. Grammatical errors abound. Likely they have no editor and, I'm guessing, they have only one writer. Could an intern help them overcome the plethora flaws upon those pages? Perhaps. Likely.
If that company arranged for an intern to receive academic credit, it could be a win for the intern and the company. The prices illustrated upon the site pages reveal they could pay someone at least minimum wage.
When I hung my shingle in 2006 I used Craigslist to scout writing projects, subscribing to RSS feeds. Until I abandoned that channel, around 2012 or so, I recognized time and time again over the years the same posts time and time again from the same companies seeking writers who wanted to gain "valuable experience". To this day I recognize those same "cut and paste" ads when on occasion I visit CL. There are people who feed (or should I say eat) on the efforts of those who desire to establish themselves as a writer and, as evidenced as the same CL ads running for better than a decade reveal... it isn't slowing down. Hopefully the OP isn't exercising the same MO.
The manner in which the OP employs his/her language responding to commentary in this thread isn't reconciling with the manner in which the language is employed in the existing advertisements language upon their site. It is clear already they have someone authoring the excursions entries, and it isn't the OP. I would suggest it is an ESL personality.
In my opinion, the OP would be better served by first cleaning up the language upon their site THEN seeking a writer to maintain that momentum... and paying them. For right now... there really is no upside to authoring content for a website... in eschange for "experience" and to "build your portfolio"... that, in the whole scheme of things, no one is going to see.
Just my $.02
This is fully bootstrapped. No one is getting paid. 