1-2000 feet.
They've only started using recovery 'chutes recently.
They weren't in 2010.
At Kuchinari (where the vid was) the safe zone is enforced because those (annular) rockets are especially lethal when they mislaunch/explode on the pad.
Here's one of the less destructive failures I've seen (sometimes they skim/bounce/roll horizontally before exploding):
If you got matey with the team on the day you could probally "assist" with the transport of the rocket to/onto the pad and get on the observation platform that the teams have.
The sound of those annular rockets is amazing.......like a steam locomotive (but louder) as it ascends into the blue.
If I were a 10 day millionaire visitor the annular rockets..........erm, and Pattaya......are the only things I would think worth returning for.