I'm a little concerned about how difficult it will be to get adjusted to driving on opposite side of road?
There's no need to be. Your driving instinct will put you on the proper side of the road almost immediately. In the past 2 years we have rented a vehicle 3 times in countries that drive opposite to what we are used to and have never had a problem. The last time I even rented a manual transmission vehicle, and I am used to automatic, and that was fine too. almost 9 years ago
I'd say driving on the other side is pretty easy generally; you get used to it pretty fast. The greatest danger/risk come from looking the wrong way when you are stopped at junctions and about to pull out.
Take extra care and time before you pull out and generally drive more slowly than you would at home. almost 9 years ago