儿子７岁生日gift

My D has a friend turning 8,they were invited to a horse-riding party.They liked it.
If you arrange things like this for him only or one or two friends, it may not be so expensive.Does he ask for a B-party? I get headache to think about a party for big group.It is very common for kids to have big group>10 party.Chinese will normally go to places like ChuckCheese,where you don't need to prepare a lot.