Flypuppy
Being in Holland you must have a bicycle, so why not ride over to the Gatbash.
Foot passenger and bicycle would be very cheap on ferry from Calais to Dover and we might be able to arrange a tow or lift for you from Dover to Gatwick.
If you bring your bagpipes on the pannier and play at the bash you will assured of free beer all night, then instead of booking a room you could crash on one of the bar sofas ( assuming it is not being used for 10W's musical sofas game).
Worth considering surely???
cheers SS