hi Walter,
i also visit the castle before, but also long long time ago liao. and now less ppl would like to go to Jerudong park liao, since start collect entrance fees... and the less maintanance to their landskap and games, also no new games. thats y many brunei guy like go to nearby town, such as Miri, Limbang, Labuan, and KK.
and BYO stand for Bring Your Own?