Window film in Monty--help

[Tootucky]

We have to stay in GJ CO till sometime in Jan., so stuffed a pillow in ceiling vents, purchased a small electric heater, and some window film you tape on and shrink with a blow dryer.

For those of you that have used it in your Monty, how did you deal with the (lovely) curtain headers & (equally lovely) day-night shades? If you have to take them off, it looks to me like it would be a bigger pain in the you know what than it would be worth.

Any ideas?

Thanks
Louise