1 Romeo arrived to the feast
Romeo , Mercutio, and Benvolio arrived to the feast wearing masks.
2 Romeo didn't want to dance
Romeo didn't feel like dancing as his sadness prevented him from doing so.
3 Mercutio tried to motivate Romeo to dance
Mercutio tried to convince Romeo to dance instead of holding the Torch. (See Summary of Romeo and Juliet – Act 1 Scene 1)
4 Mercutio doesn't believe in dreams
Mercutio told Romeo that dreams are the product of a brain doing nothing.
5 Romeo was worried
Romeo was worried they arrive early. He also believed the party will be the beginning of something bad. (See Summary of Romeo and Juliet – Act 1 Scene 5)