I'm so glad you said that! Hopefully, I don't think all is lost ... we've just come back from our regular visit to cape Town to see son and daughter-in-law, and I got quite worried beforehand as one of the things we like to do, since they live half a world away from us, is invite them over for drinks and a meal (we always stay in full apartments). As some of the threads here led me to be concerned that this might not be possible, I wrote to all three hosts we were staying with (we were away for almost a month) and asked if this was ok. All wrote back that it was fine, offered to lend anything we needed and one even offered her housekeeper to come and cook for us! The general tone of their replies was that they were surprised we felt we needed to ask!
Now, I do get that the OP was in her own home rather than a separate apartment and therefore might feel the need to be more cautious, and I also have experienced the full horror of a multi-generational Spanish family "visiting" our guests and taking over the WHOLE garden, pool and, it seemed, neighbourhood until 3 in the morning, but this wasn't the case here. I wonder if the OP could think of a way that ensures here safety and security without such draconian rules?