First time traveling abroad

Hii everyone, so i will keep it short. Im traveling outside india for 1st time ever and i have not even been to airport in my life. I am traveling for work reasons to dubai and will be there for a couple of days (3 days to 1 week). I would like to know any tips or advice to make sure i dont become stranded in dubai lol since im only fluent in english and tamil, i dont wanna be a victim of language barrier. Please suggest any apps which would be helpful during my stay (for example equivalent of swiggy, uber) I plan on doing international recharge for my jio prepaid number before few hours of my travel (dont exactly know how it'll activate upon my landing) I have heard my colleagues say they offer sim cards at dubai terminal as well, should i get it ? i have a hdfc and axis account and both my debit cards are international enabled, is there any way i can be smart with my money/spending ? most expenses would be taken care by my office but would like to keep some safe money for my personal spendings any advice would be appreciated, Thanks!