The beach is the Red Stripe beach. When N Resort first open it did not exist but Royal C opened the beach to their customers only. No cruise ship = No people. Either way just bring a wrap around and cover yourself when you feel needed. The walk is great and the locals don't bother with you.
N resort is a great resort for us. We like to relax and stay at the resort all the time we are there but we have been to Falmouth to visit 3times and trust me it is very safe. If you want to go out of the resort just tell Freddie and he will send a member of the staff with you, seen it happen many times for other guest. Give N a try you will love it.