The school holidays are over and holiday destinations will now be much quieter. It is a great time to go away for a few days and rent a car (or motorhome) and do some sightseeing as the weather is still very pleasant for September.
One very important factor is to make sure you buy your car hire / motorhome hire excess waiver insurance separately from an independent specialist insurance company. Throughout the summer the internet (and this blog) has been full of articles about the savings you can make by not buying the insurance from the car hire companies.
Remember there are other ways to save money, take your own Sat Nav (but make sure before going it is up to date and also covers your destination location. If you are travelling with youngsters who have not reached school age yet and need a car seat, then take your own one. The cost of taking it by plabe could be a lot less than hiring one from a car hire company.
Finally don't go without travel insurance. People often do and once you have left your home country you probably won't be able to buy it.