Bayer is nice, park outside the main town centre and walk into the centre.
Park 4night app is great at locating parking spots generally And is a free app.
Obvs the Bayer tapestry
Waterwheel
Bayer WW2 museum is worth a visit. (Parking available) Various tanks outside, lots of WW2 items inside with story boards etc, They have a DD Cinema presentation show in both French and English at various times throughout the Day (multi ticket for the museums will get you a discounted admission & can be bought at any of the Venues the ticket(s) are for .
Note Many places in France will close for lunch, check opening times before you travel.
many car parking spots are free during lunch time !
DD Beaches - worth doing some basic research : suggest starting at Grand Camp Maisey (site of a former Big gun emplacement) and work your way down the coast To Arromanches to see the man made break water harbour ruins, nice tourist town. (park in the town pay and display car park. )
Pointe du Hoc is a must visit and very emotional. (DYOR) Visitor centre and outside story boards etc, You can go into the German Defensive Gun positions / bunkers etc. (Bring a small torch or phone! )
Lots of free sites with good parking well worth a visit , several paid for museums en route if you want to spend a lot more time / money.
If you fancy a Venture a little further North of Maisey: Saint Mere Eglise (first liberated town during DD) Nice village area & Airbourne Museum, tourist shops, cafe (run by an English couple)
MSM park in the official car park and either walk the mile or so to MSM or get the free shuttle to the door ( MSM can get very busy). you can pay the parking on return to the visitor centre or at the barrier when you leave the Carl park.
St.Malo is well worth a visit to the Old walled city and the island, possible tall ships in the harbour etc. Walk the walls for some nice views. Check out market day, it will be busier but you get the market.
Park away from the tourist area / harbour in the outlying town (other side of the Harbour) and walk in. (Less than a mile) use Park4 night app to find free parking.
Cancale - Oyster Beds, nice sea side tourist village - park at the free carpark outside of the village on the main road (sign posted) and walk down the tarmac footpath (hill)
walk along the seafront all the way to the end & Try the oysters (note: you can buy them individually If you don’t want 6 or 12).
Honfleur - go / exit via the tall toll road Bridge !
Park at the harbour main car park As you enter the town (right hand side)
Walk around the back streets And alleyways to reveal a lot of old timber frame buildings etc.
try a locals lunch - look for the set menu for great value (le menu du jour or la formule or menu du jour).
Toll roads (automatic booths ) do take cash and give change if you don’t have a Bank card ( use small Denomination bank notes ).
Fuel filling - some places only take cards, some places like supermarket fuel station are only manned during certain hours if paying cash.
Big Brand Fuel filling stations are generally like the U.K. fill up, go in and pay.
There will be a Market on every day of the week somewhere ! markets tend to be mainly food and cheap tat.
Enjoy.