Re Butterflies: Okay, yes.. middle ground is best. One's got to consider also that you live in quite busy 'roaded' Budapest.. might be unhandy to have a brutal (big and heavy) bike there, then.
First 'sniffing up' of the culture there (Buda a/o Pest/los surroundings) could be of help here too, I reckon.
Sounds quite quite cool though, going there. Youz lucky to have such an entourage going with you too. Are you trying to learn Budapestian

(Hungarian) already?
~
Oh, and..
I don't really know where I stand with 'the donor thing'. Yes, when I'm dead.. I am dead (no worries

) butz..
I hate the thought of doctors/surgeons/students/plumbers cutting my death body open and getting organs and shit out. No.
Plus, I never really was that great a caretaker of my body. Yes, compensation 'measurements' I take by trying to eat healthy, drink enough water, blahblahblah but ja, for instance, I also smoke 'me' fags and drink quite a bit at times too.
So, no.. I don't give blood and I do not have a donor card (or something like that).
(Haha, just like to go to heaven in one piece

)