You might not have had a problem however many of these "fine" institutions nowadays have guards watching the people walking into them.. if they spot you are walking straight to the bathrooms which we should do so prior to eating anyhow but that is not how they look at things.. then the guard immediately says NO you cannot use the toilet.. in Spanish of course but with his frame blocks you when you communicate to him in English to prevent you from using the toilet.. If you are a parent with a young lad then heh the tree in front is the most obvious solution. I have not seen it a problem at all. I have seen much older young men.. high school age ones.. walking along with friends perhaps after enjoying a smoke etc finding foliage in front of an apartment building .. they too figure it needs extra care so they so oblige too. Maybe as time progresses McD's and others will relent to allow the populace to so use their facilities ... it might mean extra business to them instead of policing the sites to disallow potential customers from sharing the facilities. If you do not buy from them today .. you certainly will not buy from them tomorrow if you learn you cannot use their facilities.. That is my opinion of Burger King... it is not a King in my opinion at all.. not even a Prince.