V-Flyer

Hi all. We're flying from MAN to LAS in July. Both my OH and I are Gold members and flying in Upper. My sister and her soon to be husband (they're getting married in LAS) are on the same flight in Premium. I know we're allowed one guest on the same flight in the Clubhouse, but are we allowed guests into the 1903 lounge? Thanks!

As this question was asked recently here, I'll lock this post.