first you need to subscribe to the map and steam will download them map

then you need to run the game and the game will install the map

now you can self host the game and play with bots by yourself

by at the menu press the key bound to the console normally tilda ~ or backquote ` to open the console

once in the console enter

open aoctd-candyland.udk

press the key bound to close the console normally escape to close the console

join a team and select a class and spawn

once you have spawned again press the key bound to the console normally tilda ~ or backquote ` to open the console

at in the console enter

addbots <number of bots>

for example

addbots 64

press the key bound to close the console normally escape to close the console

the console will close and you can now enjoy the map.