it always interferes when it comes to money, borrowing money can even ruin a friendship (but that's another topic for discussion). I once encountered a situation when my friend recommended me a person who was supposed to help me in one matter, I trusted my friend but in the end there was no decision and I spent a very long time knocking my money back, a very difficult experience, but this once again teaches you to think over everything several times and not make rash decisions that concern money, I include casino recommendations in the same category.
Depends on what type of person we are dealing with. If they are always on their sane mind, then nothing bad will happen to us. We might know well our friend already, especially if we have been together for a long time but not the person that they recommend to us, so it will also be a good idea to not make a deal with them, only for our safety.
If we still want to, maybe we can do a background check for a while? That should help us a bit in our decisions and the chance for us to get in trouble will now be lessened. Casino is so mainstream now, and it can be funny that if we approach some one for financial help, they will only recommend a casino to us, lol. But this can only make our situation worse. So it is a no-no.