I know... we're off in two weeks tho so we have to put them up early 'to get the benefit' like... 
I've done my bit anyway... I'm off down the dump soon with a load of broken glass and stuff... 
Will you be home for Christmas? If so that is surely when you will get the benefit and that would be the best time to put them up ~ Christmas Eve That way they will not be looking tired and dusty by Christmas Day.
If you are not going to be at home why bother with decorations at all?
You saw them last year anyway.
I cannot understand your thinking on this .............. it is just so utterly silly .................... What?
It's LL's idea you say? 'Nuff said. I fully understand your position

Go to the tip and stop for a beer on the way ~ you've earned it.