I'm sailing on Brilliance in August out of Harwich and will be flying into London. Any recommendation as to the best means of getting from London to Harwich? Royal Caribbean wants $101 USD per person for the 2 hour transfer, saw a train that is about $84 USD or I can rent a car for almost nothing (as I have points). I'm not sure renting a car is the best decision given I'm from the US and it would be interesting to drive on the other side of the road and I understand London is pretty challenging to navigate.
Any feedback or thoughts from others who've done this trip before?