First I'm from Houston so don't call it a hell hole.
I went to Ibiza in June, I met a nice girl from Cali that was visiting her foreign exchange student's family in San Sebastian and they came out to Ibiza for a spell. I also met a dude around my age from Philly at the airport and saw him at Amnesia. So yes, there are Americans on the Island. I met 2 Canadian girls too. Last year I met a group of spoiled punks from Austin.
There are multiple reasons for why there aren't many Americans on the Island. First, is distance. We have the Caribbean and Mexico at our disposal so why fly 12 hrs for a destination with less impressive beaches as compared to some of the Caribbean Islands. Not knocking Ibiza though, it's my favorite vacation destination
. Or you can go to Hawaii and not even need a passport.
Second, is cost. I can do a week in Cancun all inclusive resort and airplane ticket for around 1500$. My trip was about 3x that. The Euro also kill's it for a lot of people.
Third, EDM's hayday in the states was from the mid 90's to the early 00's. Even then, it was more of a Rave type scene then the clubs with EDM. It is making a rebound though. There's still a hip crowd that follows it, and awesome event's like Coachella and UMF Miami.
Fourth and most important, not many American's know what or where Ibiza is. Everytime someone ask where I went I have to explain. They rarely have a clue.
I think the reason that the American's that do go are going for the club, party and EDM scene. That's why I go, because there is nothing like it and it fulfills my insatiable appetite for morally compromising activities.
My advice is to not worry about meeting Americans. With all the European wool running around, you're a novelty. Play that hand kid, play that hand.