Hello @FelicityT and a warm welcome to the Community Forum 
Just to clarify this isn’t a house/pet swap site but by choosing a combined membership you can travel and house sit whilst someone/others comes to take care of your two cats. I have attached a thread you should find helpful
I have also attached a link to explain the membership types for you.
I have also attached a video to explain how it all works.
For reference once you are a member and once your listing is completed you can also add your TrustedHousesitters profile on to your Forum profile by following the attached link, should you wish. This will then enable others to offer you helpful advice and feedback and will also give your listing extra exposure!
If you are unsure how to do this, or if you have any questions at all, do not hesitate to ask, we are all more than happy to help.
Also, remember you can use the spyglass symbol at the top of the page next to the TrustedHousesitters logo and search for any questions that you may have as they have most likely already been answered on here and of course if not then please just ask! 