I was on MIA-IAH in Y on Sunday (first time in Y in quite awhile) and the crew came through (once) with a beverage service but didn't offer BOB so I thought that might come shortly after on a separate run, but it never did (nor was a second drink order ever offered). Is the current expectation that passengers are supposed to affirmatively ask the FAs for BOB when the drink cart comes through, rather than vice-versa?