Thank you for your reply. Just to clarify, I'm only interested in buying personal housing at the moment. I don't have a FC on Materia at the moment so I'll be focusing only on getting a personal house. Also, I'm not interested in owning/winning several plots and keeping them all. I just want one plot, I do have a particular plot in mind, it's not one of the "unicorn plots" either so I hope I will get it, but who knows.
The reason why I wonder about joining the lottery with multiple alts is because I'd like to increase my chances of getting a plot. A single one. As I understand it, some people will use multiple alts, I just wonder how many people will do it, whether it will be the majority of them or not. If it's the majority of people that will do it, I feel that I should do it too in order to increase my chances. If I win two or more plots on the same server, I can only keep one anyway based on the rules, so I'd have to give up the rest of them (which I'd be happy to do as I only want one plot). In the unlikely event I win two or more plots on different servers, I'd only choose the server I like the most and claim it there, and I'd let all the other plots go so others can get them. I am fully aware of the struggle and pain that housing is in FFXIV, so I'd consider myself extremely lucky to just get the one plot I want; if I got more than that, I'd be 100% happy to let them go so other people can have them too.