You can play the first part (chorus) very quickly and it sounds very good on piano.
This song is easy but you won't learn it in one day, so just take your time to study each part.
Use the sustain pedal for this song. You can let it depressed all the time at the beginning. With more experience, you will hear that the sound is better when you release and depress the pedal just before you start a new serie of notes.