The toiletry stuff - I'd only bother with decanting if we were going abroad, or in the days before I could drive when I used to take the kids away on the train (and as we had to schlep through London on the Tube the goal was always to make everything as small and light as possible!). However she is travelling by car and Butlins is definitely not abroad.
She is obviously planning another beach trip/ charity shop rummage to buy another load of old tit/ pick shells and pebbles off the beach and therefore needs as much room as possible in the car to carry it all back.
As for the foam, honestly the woman lives in a million pound house, she can clearly afford to get someone in to do a bit of wood panelling for her. What's with the 'it's so expensive' ?!! - you're not living on Universal Credit woman, you're earning £1000s every day. Her weekly income is probably a year's earnings for a lot of her followers.