I've been to Japan and found the place all right to move on my own despite the language barrier. But how about Korea? Are there sufficient English signs and are the people there helpful?

I will be going to Incheon for business purposes. But for 3 days only. Any bros here recommend that I should venture out? The closest I can think of as I look at the map is Seoul. But that's like in the city (crowded, less nice??)

What about the nicer, scenic places? Is it convenient to go to from Incheon?

Thank you!!