can't help with places to eat and drink, but when you're in nice, take a walk up the steps to here for a great view of the prom des anglais. excellent for the 'gram, but also good if it's a crappy day and the planes are landing manually and banking around the bay
:
https://www.google.co.uk/maps/place/....2798277?hl=en
don't arse about too much with stocking up on snacks and drinks in nice - much easier to do it at the supermarket in monaco. the price difference is pretty minimal. the supermarket thundersports refers to is here:
https://www.google.co.uk/maps/place/....4210125?hl=en and depending on where you're walking there's another one here too:
https://www.google.co.uk/maps/place/....4258137?hl=en that one you find if you go to the top exit of the railway station and turn left to walk downhill, and follow the road.
they're currently digging a massive hole at tabac, and building a public car park and motorsport museum, not sure how much of that will be done or how much of a pain it'll be for the grand prix but they were still in foundations laying stage a month ago!
if you walk up the avenue de la porte neuve, down the hill from there is the secteur rocher where the general admission area for the grand prix is. eventually if you carry on walking you find yourself in the old town and there's the palace up there too.
the local food specialities are the salade nicoise, p!ssaladiere (lol, swear filter... it's like a pizza base with onions, anchovies and olives) and basically, italian food. if you enjoy a good pizza or a solid plate of pasta you can find those.