Needmoresleep your perception of Bournemouth is not what Bournemouth is like at all. Like most places you have "rougher" areas, "more expensive" areas and everything in between. There are many regular bakeries too, not everyone in Bournemouth and Poole shop at Mark Bennett's expensive bakery. People even shop in Aldi's and Lidl which there are plenty of!
I've been driving to work throughout lockdown as a key worker and can vouch that the roads/streets were very quiet like a ghost town. People have also been wearing masks and keeping their distance whilst queuing.
Our roads leading to Bournemouth; M27/A31/A35/A338 get extremely congested at the best of times. Add thousands of day trippers going to the beach during a pandemic and something is going to go wrong. It only takes one accident on the A31 or A338 to screw the traffic up for miles and miles around the area.
On Wednesday there was an accident on the A338 "spur road" which meant drivers cutting through the back road from Ringwood to go either across the Avon Causeway (where I had the unfortunate situation where I was the wrong side of the "give way" section meaning it took me half an hour extra to get home from work due to the sheer volume of cars who had right of way over me.") The other way is Ringwood to Christchurch via Stoney lane where the traffic was queuing for a mile and a half (on a minor B road) to get on the roundabout there. While they are all queuing, it traps residents in their villages as that's the only way out.
Locals don't tend to go to Bournemouth beach, they go to other local beaches within the boroughs of Poole, Bournemouth and Christchurch which are quieter and much nicer. The vast majority of those on the beach the last few days weren't locals. They came here, made the roads unbearable for locals who are trying to do normal things like get to and from work, doing their shopping or accessing healthcare. They created a very dangerous situation for all involved, including the emergency services. They disrespected people's right to get in and out of their driveways and made roads dangerous from irresponsible parking. They also left tonnes of litter on the beaches and surrounding areas.
It's not just the town centre this effects, it's all the surrounding areas leading to Bournemouth.
That's why "just a day at the beach" during a pandemic where facilities such as toilets, restaurants, hotels etc aren't open to spread people out a bit is a really bloody stupid thing to do.