The county of Sussex has a real mixture of quaint towns, rolling green countryside and south coastal beaches.
In terms of dress, absolutely anything goes. Just wear whatever you feel most comfortable in and you'll blend into the melting pot that makes up this vibrant area.
For dining out, there are one or two smarter restaurants but nowhere is overly so and anything really – including jeans or shorts – will be acceptable, particularly in the resorts.
If your trip includes Brighton it's funky, stylish and fun – so attracts the cool, creative groups.
The seaside resorts including Brighton, Worthing, Littlehampton and Bognor Regis are frequented by young families and older couples too. The beaches are largely rocky so you'll need some dive shoes to protect your feet, and closed-in shoes make walking on the pebbles a little easier. More sand is exposed at low tide. The sea is invariably cold so an all-in-one suit would be a good idea, if you're brave enough to take a dip.
Chichester is a university town so has a young student population, but plenty of draw for tourists too with some pretty streets and shops to explore.
Arundel has some steep hills to climb, and plenty of sightseeing around the medieval castle so opt for comfy flat shoes.
The South Downs are a National Park and offer plenty of countryside walking with stunning views. Trainers or sturdy shoes are fine in summer and dry spells, but walking boots would be preferable in the winter when it may be wet and slippery underfoot.