How to Say "There are a lot of people drinking coffee at the cafe." in Korean?

"There are a lot of people drinking coffee at the cafe." in Korean is 카페에 커피 마시는 사람 많아요. (kapee keopi masineun saram manayo)

커피 (keopi) - Coffee
커피 마셔요. (keopi masyeoyo) - I drink coffee.
커피 마셔야 돼요. (keopi masyeoya dwaeyo) - I have to drink coffee.
졸려요. (jolryeoyo) - I'm sleepy.
졸려요. 그래서 커피 마셔야 돼요. (jolryeoyo geuraeseo keopi masyeoya dwaeyo) - I'm sleepy. So I have to drink coffee.
카페 (kape) - Cafe
카페 가야 돼요. (kape gaya dwaeyo) - I have to go to the cafe.
유명한 카페 (yumyeonghan kape) - Famous Cafe