Yet such lists do tend to suggest that the Eel Birds are at least roughly comparable to salmon, rather than to chocolate, poetry or continents. In what sense is Risa like Corsica?
If the entire planet is a resort, it's probably a fairly small planet, to be inconvenienced by the antics of the two-bit moralists in the DS9 episode - or to result in all those "chance" meetings ("The Game", "Captain's Holiday") without the mark smelling the rat. But Trek does have midget planets with one-gee environments, so we can't completely rule that out.
OTOH, if just a small part of the planet is a resort, and needs a weather control net for that, the rest may well be quite inhospitable (I mean climate-wise, but I'd suppose there would be actual hostility towards the local equivalent of The Mouse there, too).
ENT "Two Days and Two Nights" is the only time we see more of Risa than would fit on a single beach in Miami. But that still doesn't require anything larger than Corsica...
Timo Saloniemi