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I think Midden Zeeland will rent you a bike to get into town.
Alderney has very cheap hire cars so you will find they are cheaper than a few taxi trips and you can tour the whole Island
I'd consider Compton Abbas and also Dieppe.
Compton has a great restaurant and some nice places to stay nearby
Dieppe is a very friendly airfield and the centre of Dieppe has great seafood restaurants all around the harbour.
Trouville/Deauville/Honfleur all share the same airport and are well worth a visit. Honfleur is a pretty harbour . Deaville/Trouville are seaside resorts.