I wish with all your brilliance you could force Spring weather upon us.<quoted text>
The immigration test for Costa Rica (I imagine you're talking about eligibility for residency?) is pretty easy. I'm not really sure there is anyone who can read this (minus Spook, perhaps) who can't qualify for permission to reside.
So far as the Netherlands, I'm delighted to hear about what status you would be seeking there, given the rather slim longer term pickings for non EU/EEA natives. I don't imagine you would seek naturalization (being ineligible and likely to remain that way for some time, barring a Dutch spouse). I imagine what you're talking about in having passed the "immigration test" is that you would qualify for a short stay residence permit (with the funds needed to access this visa coming in at a whopping 34 euros a day)? Or the requirements for proper residence permit (remember, as an American you don't need a MVV!) if you can demonstrate a need to reside in country?
Also, weren't you supposed to be off on a fishing trip...now?
April 1st has ice on the harbors of Laker Erie.
Since the permission to take time off from work is mine alone, then when water is 45 degrees, you know I will be jigging walleyes for about 3 weeks constant.
By chance I catch a carp, where do you want it shipped?