24 hours
I didn’t notice Consierge set hours, except sometimes there was a sign, stated she/he would be there at a certain time that day. I have seen an assistant there more hours. Someone is usually there in the afternoon.
There is a card for entry, it will be in your stateroom
Nespresso Machine, tea, water, soda in cans
Snacks most of the time
Pastries, small sandwiches, cheeses, fruit, cookies, have seen dips
Idk if it’s open on disembarkation morning, most wait in another venue, the Consierge will tell you which one.