What are you looking for in your shopping trip?
The idea of Christmas Shopping is lovely , moseying round , picking up a few well chosen bargains.
The reality is anything but 
Are you travelling by car?
Do you want town/city or do you want mega shopping centre?
I find after two shops I'm laden with bags . Makes it nigh on impossible to look along aisles , bend to pick things up.
So , I put the bags in my car (keep the reciepts in my handbag) Someone will try and get my space (and get the hump when I'm not leaving)
Toilets
Coffee/lunch breaks
The general moaning buggers who whinge about the queues ( Doh , it;s bound to be busy)
I usually do a mixture of :
Lakeside and Bluewater but only on a weeknight in December .
London in early December (for shopping) and usually the 23rd with DD (when it's surprisingly quiet)
Online for most things
M&S Click&Collect to my local store
The idea of a "Shopping Weekend" appeals but in my family DS doesn't like shopping , DH is
and DD gives up after 'her' shops and gets all meh in 'my' shops.
So it's easier to shop alone 