Common Mistakes : Otherwise

Otherwise – Adverb

BAD: Remember to get there early otherwise you may not get a seat

GOOD: Remember to get there early. Otherwise you may not get a seat

GOOD: Remember to get there early or you may not get a seat

Unlike or, otherwise is an adverb (NOT a conjunction):  I’m glad that you told me about the show being cancelled. Otherwise I’d have travelled all the way to Glasgow for nothing