Short answer: Use the park and ride from Lelant Saltings — the train drops you in the middle of town and the coastal route is genuinely scenic. Driving into St Ives in summer is a mistake. Book restaurants in season.
St Ives is one of the hardest towns in Cornwall to drive into, and the alternative is genuinely better rather than a compromise.
Parking: use the park and ride at Lelant Saltings. The branch line runs along the coast into town with views most people would pay for, and drops you centrally. Trenwith is the largest town car park with its own bus link if you must drive in.
The streets: genuinely narrow, and satnavs routing drivers into them is a well-known local problem. Stick to signed routes.
Booking: yes in season. St Ives restaurants are small and popular.
The hills: St Ives is steep. The harbour front and Porthminster are the flat parts — worth knowing if anyone in your group finds hills hard.
There is no single standard fee. Charges vary by car park, by operator and by season, and this catches first-time visitors out constantly. What to know:
In peak season — roughly late July to the end of August, plus school holidays and bank holidays — yes, for anywhere you actually want to eat. Cornish restaurants are mostly small, and the good ones fill.
Outside those periods it's far more relaxed, and you can often walk in. The exceptions that are worth booking year-round are the well-known destination restaurants and anywhere doing a Sunday roast.
A practical point people miss: many Cornish kitchens stop serving earlier than you'd expect, particularly out of season. Turning up at 8:30pm in October can mean finding the kitchen closed even where the bar is open.
Main roads and towns, yes. Beaches, coves and smaller attractions, often not — and satnavs can be actively unhelpful in Cornwall.
The specific problem: satnavs routinely route drivers down single-track lanes that are technically the shortest way and practically a nightmare, particularly with a hire car in summer. Following brown tourist signs is usually better than following the satnav for the last few miles.
Phone signal is genuinely patchy in west Cornwall and on the moors, so downloading offline maps before you travel is worth the two minutes.
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