I just don't trust vaccines, not the ones like flu vaccine, etc. May do more harm than good, IMO.
As far as getting tested *before* the fun, that would be impossible for a one night stand situation, unfortunately. I'll just have to use my judgment, I guess. Haven't had that situation anyway, yet. Actually, now that I think about it, at one time you could get a card from the free clinic stating the results of your latest test, along with the date, am I right?
Long time ago I met a cute younger woman and asked her out. She was the one who mentioned testing first, which was actually a relief for me. We ended up getting physical anyway, without the testing! Used a condom always. No std's from her.