Thanks for the replies- seems like flying to EWR won't be too bad.
globalste I did notice these vibrations in row 11 on my last flight on the 4-Class 777, but I only noticed it at take off. I thought about choosing 14AB and 15A but they are close to WT+ and I can imagine it being very noisy if there is an infant seated in the first rows of WT+.
I wouldn't have thought I will be too tired- on the JER-LGW flight leaving at 10AM and have a nice leisurely connection between that flight and the 17:25 flight to EWR. Hope for AVOD though, but I will bring my Mac too so I can watch movies on that instead.