GK430
You are correct, as is 140C, the handling is mandatory, however if you are in an aeroplane of 3 tonnes or less you will go to the aeroclub (Official GA Handling Agents), at the threshold end of RWY27, directed by ATC.
If however you are above this weight, you will be sent around the back of the airport to the Exec Handling Agents, Aviation Beauport.
The Aeroclub landing fee is £3 per 1/2 tonne, hence a PA28 (or similar) will be £9. This includes 7 days free parking!
When taxiing, taxi to the top of the small taxiway & park on the grass anywhere in line with other ACs in the large rectangular parking area provided.
The light aircraft parked on the right of the small taxiway are club aircraft, parking to the left of this taxiway can create a few taxiing problems (had a few entertaining views from the bar recently).
The GA desk is open from 07.00 to 21.30, you can get Wx, ATC flight plans & Notam info all from the flying room downstairs.
Jersey isn't closed over all the island on Sunday, the pubs are all open, many restaurants are too, especially the Aeroclub one. £11 for a 3 course Sunday Lunch.
Have a good trip.
FB