Some fun ideas are you can Dee who can hike the farthest the quikest, a huge game of manhunt aka hide and seek, game day a relay race. There are too many to list just be creative.
It really depends on the person. Some people like it and some people hate it. If you are a very outdoorsy person you probably will really enjoy it if you are a couch potato you will probably hate it.
maybe you could get your mum to take you to your local spa and get a makeover that might me fun and then have a disco after so you could show your new look too everyone and then have a sleepover...