overall the essay is good, but there are few grammatical errors.
Nevertheless, when I actually entered the venue, the music was so loud that I felt like I was at a party.
'However', sounds a lot better than 'nevertheless'
The hosts dramatically dressed up as the superheroes in The Avengers to save our city.
the hosts staged a performance on 'The Avengers'
However, their every frown and every laugh were so emotional that it had an amazing power to entertain everyone in the venue.
however, their comical emotions entertained everyone present
I realize and understand the cultural differences more profoundly. Some people may consider they are irreconcilable.
i realize and understand the cultural differences more profoundly, although some people may consider them irreconcilable
The rigor in eastern culture and the vigor in the western world are never on the opposing side.
on opposing sides
goodluck!