Next is a whole lot of work to actually describe it which a tourist would typically not be doing, so the idea that you should get naming credit is not a given. There's no hard rule for it.
You can definitely give input for the name, and there's rules to naming. You can't name it after a company, for example.
The most generous example I've seen is a research organization where you can "buy" a species name. Within taxonomy rules, you can decide on a name for a fee, even if you didn't discover the species at all. It's a way to fund research.
In my experience though, getting an actual discovery described is the real issue. I've discovered both plants and insects new to science myself, did the work of collecting specimens and sending them to the correct authorities, but years later there's zero movement. Taxonomists are severely underfunded.