INFPs can be quite sociable we just need the right backdrop I think. We're silly drunks too.
There are probably many conversational cues you can use to expose INFPs too I think. We're probably fairly awkward/reserved looking at gatherings too if we don't have a friend with us and aren't intoxicated lol.

An IxFP may seem similar from the outside, so try and engage them in intuitive conversation. An INFP's eyes may light up like fireworks then.
I'll bet the percentage of us that drink is much less than the percentage of the general population that drinks.
Hmm...I drink quite often, but I don't get drunk. I do get very silly when buzzed. I might be mistyped as ENFP then, but the clues would be I am usually out with
one friend (I fade in a group), and I am focused on having fun with my friend, not trying to get attention for myself. I go to clubs/bars maybe 2-3 times a year. I love loud music and to dance, but I only go if a friend wants to, and I only have a few close friends who are usually in relationships.
I recently asked a female INFP for her phone number and out to coffee to just talk, she accepted. I wonder now if she accepts everyones offer because she is just ridiculously nice/meek, or if I'm special....or both hmmmmm
I'll be honest, I used to have a hard time saying "no" in these situations if the guy seemed sincerely nice, because I am such a bleeding heart

. I used to pity date guys until I realized that leading them on is worse than being upfront to begin with. I mean, I end up rejecting them some point, so I had to grow a spine & learn to do it from the get-go.
Sure, why not accept someone's offer if they seem pleasant and intelligent enough, and want to talk and have coffee. Infps generally enjoy good conversation more than they enjoy initiating it. Regardless of your persuasive skills or your level of interest in her, however, she will be the one deciding if and when it's going to go any further! Talking to someone, 1-2-1 or otherwise, and having a romantic interest in them are not generally related things to infps.
This is so true, and I've learned to be careful because men will interpret this personal attention as romantic. If I am attracted to someone, I actually find it harder to speak to them.
And I don't think that sporting events would be much better either.
Poetry reading is probably a pretty good bet though. Book clubs, Book signings, the grocery aisles of your local organic food store maybe, farmers markets?
I don't think that we are big into gyms either...
Spiritual classes/seminars/etc, I bet that are chockloads of us there
Well, you'd find me in the yoga/pilates class at the gym

. I also like loud music, so spin classes too. Anything where I can space out a bit is good.
Funny you mention farmer's markets. Almost every INFP I know, 1) likes outdoor markets, and 2) really appreciates good/fresh food.
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Some INFPs are too shy to do much alone, but I think many of us as we get older follow our spontaneous whims and have few qualms about being out and about alone. I go to concerts alone quite often, for example. Generally anything related to music/art/philosophy/religion/books/nature/animals will draw INFPs. That's a bit of a stereotype of course, but it holds true for many of us.
Some INFPs are into more traditional religions, so don't rule out church or bible study groups. I know several single INFP women at my church; what we have in common: we often arrive late and we leave immediately afterwards (maybe talk to the same 1-2 people). The window for catching INFPs may be small. If you see them, make a move, because in a blink of an eye we're back in our homes hiding out alone.

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