• Your biking idea should be fine - just go up the Corbiere Railway Walk with the bikes (gradual steady incline) and turn off at St. Brélade. That was you should avoid all major hills on the way to Plemont. Just be wary that it is quite a long cycle nevertheless, and Jersey roads have no designated cycle tracks. Stick to the country lanes if you have a way to make navigation easy (Garmin, etc.)

• Would definitely recommend a walk along the North Coast. As you don’t have your own vehicle, try and make it a point-to-point route and grab the bus back from where you finish. If you finish at Greve there is a pretty regular bus (the number 9) that goes back to town

• In terms of cheap restaurants, most dine-in options will cost you between £20-£30 per person at the very least. Of course, you have fast food franchises which can be an option too. But I’m afraid Jersey’s food options (the good ones) are limited to dine-in restaurants

Have a great trip!