I can see why the external link made you think that it was a self-promo on a cursory review, but I do not believe that it was in this case. 

HD always mails me these finance promos, so I use HD money for free and pay it off as I get closer to the time the promo expires.  

I assume the business credit lines are basically 0% intro promo credit cards?

I have a promo code.

Any new promo code?

Promo rates can be as low as .99 for 6 - 24 months with no closing costs and if you still have this HELOC in two years refi again doing the same thing as most banks don't charge back application / appraisal / closing costs or have early prepayment penalties after the two year period anyway.

With all the issues with the promo is making me doubt.

They had that quote they I posted here posted below the play window and I assumed the play window was going to be a promo video of some sort. 

Gather emails with something like Stayfi, use a qr code to have guests follow you on socials or leave their emails in a sign up for discounts coming back, use a Meta Pixel on your direct booking website or landing page and then do a retarget ad campaign to them, offer "Family and Friends" promo codes to guests when they come back through an auto message a couple of weeks after they have left, etc. are some that I use.  

You can run one-off searches for phone numbers and email addresses, and they often have promos for new users.Spokeo for Professionals: While not specifically real estate-focused, it’s a reliable option for finding contact info for individual property owners, especially for one-off searches.Forewarn: This is great for verifying contact details and gives a bit more intel on leads.