Answer: Canada
Step-by-step explanation:
The answer to this riddle is Canada:
"A night-club bouncer, now a top official" is a reference to Justin Trudeau, prime minister of Canada, who used to be a nightclub bouncer and a snowboarding teacher.
"Put Coke or Pepsi in it; first three initial" refers to the word "can", meaning both the container of Coke or Pepsi and the three first letters in "Canada".
"Combine all lakes, but I still have more" refers to the fact that Canada has more lakes than all the lakes in the world combined.
"Of all the places; I have the largest shore" refers to Canada having the longest coastline in the world.