I have used camp wise several time over my career from small local groups to large national organization for multiple purposes- fundraising events/fundraisers; registration at conferences or conventions & training programs / workshops - it is very easy system which makes managing everything so much easier than trying piecemeal through email etc..
The support team can usually make things work pretty quickly too! No dislike whatsover but would like more robust reporting options in each program area perhaps? Some are better suited towards certain types activities while others seem not quite suitable if you want something customised around your needs eg different event costs per person attending vs those who register early compared against last minute registrants). Registration process has been simplified by using this tool allowing us now do all our registrations without any manual intervention required!!