Arla Westbury shouldn’t cause you any issues backing onto bay wise. With fridges depending on 5th wheel position it may be necessary to split couple otherwise exactly same. Couple of extras on walk round check, check it’s running/switched on and within acceptable temperature range and check the diesel level. If its a newish trailer then the gauge will be a good indicator but if not or if gauge is visibly broken find a stick to dip tank.
Hope that’s some help