First drafts are where the excitement of finally writing THE story spills onto the page. Everything tumbles out, including current preoccupations. So, if you've recently become addicted to eclairs--guess what? that's what's served at your Regency tea--whether or not its era accurate. Accuracy, character integrity, all of that's for later drafts.
First drafts are where ideas buzz.
Can you tell I'm loving writing the first draft of my third angel and djinni novella?