French language Q&A Forum

I think it's interesting that you never note the divergence of french and english grammar on using bien as an adverb with être.  If one says in english  "it is good", good is an adjective.  If one says the french version of this "C'est bien" one uses the adverb. Elsewhere in french "c'est" is followed by an adjective "c'est beau". Usually, I guess, one uses il/elle "il est difficile".   But it seems unusual to suddenly use an adverb to describe not a verb but the noun of the sentence.  I can see easily Ça va bien, because bien is modifying the verb going. 

The question was what does the following mean: "Je vais au restaurant plus tard" and one of the answers I picked was, I will come to the restaurant later." It was marked wrong. But I just took a lesson on using the present tense to describe the near future. I'm confused.