& virtually shut is just how I like Calis after being in the hustle & bustle of Brighton for so many years!
Quiet, peaceful, no problems with being asked to eat here there & everywhere along the prom, prices drop some way down compared to the summer tourist ones, lots to do if you want to do it, easy to amble along & stop for coffee or a beer wherever's open, no difficulty in getting anything that is available in the summer (except maybe a quick tan lol). I've yet to be here in July or August but have just about done most other seasons now, this visit is my 1st for Xmas & New Year, certainly not short of invites to go out & socialise so unless you are a real sun worshipper can't see that winter wont suit you.
PS: Like Jules said, "holidaymaker watching" can be fun too!