Hi Gijs,
I am reading the forum for a project I am associated with (as part of Omdena), and I just would like to know if the example you referenced (to the example pages) is only working when you have an API client id and key; I presume it does
Indeed, you need API credentials to run the examples on the Sentinel Hub Python documentation page. The configuration page explains how to set up the system. To obtain credentials, you can sign up for a free trial or take a look at the pricing page. If you project is research oriented, you could also consider applying for a sponsored account through ESA’s NoR program.
Would the API be the best way of doing this, or can this also be done with a V3 script?
I would say it depends what you want to do and what tools you are using. The API (using Python or REST commands) is going to be efficient to fetch data in a flexible, scalable programmatic way. If you only need a few images, you can download them manually through EO Browser, but you will be quickly limited.