You should definitely use different keywords on different pages of your site. No duplicate tags!!!
Use only those keywords you want to be competitive in. So to say if your main olg fag competitor is already using "tour" or "turkey" it'll be very diffucult for you to overcome him and appear on the 1st page of google search.
try to use long tail keywords, consisting of 2-3 words. Use google trends to examine what keywords are popular or another powerful tool is wordtracker keyword checker (
learn more).