WHAt time is the cafe open till on Wednesday ? We would like to have early dinner 4;30?thanks

I believe it's open at this time

Café Serai, the name of the Rubin's cafe, is open to the public during Museum hours and does not require an admission ticket. Since the museum is open until 9pm on Wed, the cafe will be open until 9pm too.

Cafe is open till the evening. You should be able to get food at around 4:30pm