apushatayid asked the obvious question, “What pressures?”
In reality, there could be many sources of pressure. Having learned in E”Y quite some years ago, I can guess at some questions that may trouble an American bochur in E”Y.
1. Am I am learning to the level appropriate for the yeshiva where I am? Should I feel guilty if not?
2. When not in yeshiva (off hours, weekends, bein hazmanim), what should I be doing and with whom?
3. In whom can I confide when I have any issue, even a little one, that I want to discuss?
4. Should I join the groups of bochurim that go for Shabbos meals to gracious machnisei orchim who are total strangers? It makes me feel cheap, like a beggar.
5. While learning in E”Y might be great, there are also many distractions. How can I deal with this conflict?
6. Some of my friends are getting engaged or married. I am not even getting “redd a shidduch”. Is something wrong with me?
You can think of others. Regardless, drinking alcohol as an outlet is never acceptable as consistent with Torah value.