I just read something on imdb that made me think.
What if Odette knows Logan has a mistress? Maybe she has a lover back home too. Logan refers to their impending marriage as "the dynastic plan", and it makes way more sense that he's in a discreet open relationship, than putting that plan at risk to see Rory. Taking her to his dads restraunt, and not seeming fussed when Mitcham see's them together, even Mitchum getting her the Conde Nast interview. It makes sense Mitchum wouldn't risk ruining the plan, by helping his sons mistress, unless he knew it wouldn't ruin the plan. I don't think he'd believe they're were just having dinner
That would be a lot different than if he were cheating imo. As for Rory, it would depend if she knew Odette knew Logan had a mistress or not. I think Logan will know it's his child, and see them now and again, but won't acknowledge the child publicly, or discuss it with his family or Odette (he may stay with Odette, she may find out and be unhappy with the development and leave him).
I loved a series in the life. Even the musical, and the life and death brigades wild ride. I always liked "they guys". Was glad we got to see April too :) When Lorelai was going over the guest list (Keifer Suttherland!) she didn't mention Jess, presumably because he's part of the wedding party, Lukes best man or an usher. So I'm presuming she didn't mention April, as she's a bridesmaid.