Everything looks fantastic! Please share the details on the mussels.
Ripped from Barbecue by Christine France
1Ib mussels add 2-3 Tbsp water into a pot, cover and cook for 5 mins-ish (you could do this in foil on the grill too). Discard water /any mussles that do not open.
Place mussels on the half shell on a grill tray
Topping:
1 Tbsp of butter and Olive oil
3 Tbsp Parmesan (grated)
2Tbsp Parsley (chopped)
2 Garlic cloves (Minced/chopped)
1/2 tsp coarsely ground pepper
All mixed together in a bowl add a small spoonful onto each mussel, grill on medium (I also do hot and it's been fine) for 2-3 mins