I was on that July 4th cruise as well, and agree the first night in
the Britannia was slow, but it improved the next evenings. I think
they were understaffed in that room, but the Lotus service and
food was amazing!!
I think if you want to have a good time you really have to look to
ruin it for yourself. I think it is the finest ship afloat.
A suggestion for someone would be to go to one of the alternate
choice restaurants the first night as they are all pretty empty, except
for Todd English which you have to book right away and is perfect.