Everybody hates a tourist.
I spent a few years doing a few days dev and a few days labouring, wading in waist deep water planting out wetlands:
https://www.australianecosystems.com.au/wetland-construction...
It wasn't easy to juggle, and taking phone calls in the swamp about dns config and database connection strings was awkward.
In the early days, everyone was part time, once the company was better established, i was a tourist in a full time crew and it didn't mesh
I actually think it's a great idea, because most of the jobs are not very attractive or well-paid, easy to learn and an adventure/fun for about one summer. It wouldn't work for many places, but for New Zealand it works.