Safety precautions when having a bouncy castle

So my sister and I are planning to acquire a bouncy castle hire Newcastle service from this provider. It will be for her daughter’s 8th birthday party so we’re really excited. However, we haven’t tried hiring such inflatable equipment before so we’re not really sure what to do and what to take note of. Can you give us some safety tips when it comes to using a bouncy castle?

hopefully the company should be able to give you all the do's and dont's for the bouncy castle. We've hired one before at our community centre, and I know we had to make sure the air blower was securely attached to the castle, mats were in place and had to limit the amount of children on there (banging heads, etc)! All good fun though