I’ve heard that Bucknell has a pretty vibrant social life and lots of Greek involvement. But the question is not whether they have a lot; the question is whether you can enjoy yourself without being Greek or drinking a lot. Given that 56% of women and 59% of men are in Greek organizations…you’ll be in the minority if you aren’t Greek, and that might affect your social life somewhat. Participation is much lower at NCSU (11% of men, and 14% of women).
Your introductory classes are likely to be large at NCSU, but your upper-level classes will be smaller. Only 6% of classes at NCSU are larger than 100 students; the majority have fewer than 50 students. ALso, since you are in the honors program, you will have smaller classes and more personal attention - like the HON seminars.
How often are your parents planning on visiting you? The process to getting to Bucknell shouldn’t be a burden more than once a year (maybe Parents’ Weekend) other than moving in and out of the residence halls. Lewisburg is pretty isolated, though. I live in State College and often pass Lewisburg on my way into New York. It’s only about an hour from State College and PSU, but much smaller (pop. ~5,000 as opposed to State College’s ~40,000 in the town and ~105,000 in the Centre Region more generally). That could be good - that means that campus life is likely very vibrant and concentrated on Bucknell’s campus, since there aren’t many other places to go.
How much of Bucknell’s cost does the $20K scholarship offset, and did you also get any need-based aid? I’m imagining that the total cost of attendance at Bucknell is around $50K a year, so that still leaves you with $30K, which is probably about what it costs for an in-state student to attend NCSU.
So, it really depends. Your one concern about NCSU seems to be the class sizes, which won’t be as much of a problem in the honors program. Your concerns about Bucknell (its remoteness and the domination of Greek life) are not so easily remedied, so I would lean towards NCSU in this case. Also, if you know that you’d like to return to North Carolina or the South in general after graduation, you might have an advantage with an NCSU degree and alumni network in the area.