Motorhoming off grid

Hi.  We have a 2017 Burstner 680G Ixeo and will be touring the Outer Hebrides this month. Our model has an electric bed raising and lowering mechanism. I'm likely to use a couple of sites without electric hookup. How much battery charge do these bed mechanisms use and would I have any concerns that the battery would not hold up bearing in mind that obviously lighting would also be a drain? The longest stay at non electric hookup would be 2 nights. I'm concerned that although there is an emergency means of winding the bed up and down if the bed is in its lowest position the winding mechanism is almost inaccessible.

Any advice would be welcome. Thanks