Blackrock Beach

So I visited here yesterday after a long drive. Just to see what it's like as I was planning on bringing the kids to build sandcastles etc. On the other end of the beach. So obviously we get out to check it out and to our delight there is some public bathrooms/showers. Kids are looking to use it so we walk over only to realise they're 20c not a big problem if you have brought your purse/wallets. One man who was just exiting the loo overheard and left the door open for us to use then suddenly the toilet security/caretaker comes and stops us from using the bathroom as we didn't put the 20c I explained to him that we didn't bring a purse it was our first time to come but not a chance. We were told the bathrooms are not a charity. Some kind ladies came and overheard the drama so offered to pay for the kids to use the bathrooms which I declined as I just wanted to go. He then changed his mind and told us to just use them. Which I declined. Moral of the story carry small change with you when going here. Security is taking the loo serious lol.