it's a very long time since we needed one but at the time hiring one was essential. I think even when kids have outgrown the buggy at home, using one at DLP is a good idea. People don't realise how far they walk & IMHO little children walk/run twice as far especially when they are excited.
Cost 6.50 euros not sure if it still happens but if you lost one, they would replace it if you had your receipt.