Hollywood sign
I know this is a kids tv show but there are many reasons why that scene work
1) the kids shouldn't be climbing the sign were was security or something to see if there was any supervision
2) how far did that zip line go I'm it's not suppose to go to that far isn't it like 500 ft from where Jessie was standing and wouldn't Jessie lose her grip espically with all that crap she was wearing?
3) wouldn't the socks burn or rip apart midway or halfway these kids would be dead
4) shouldn't Jessie or the kids face consequences for culataral damage that sign ain't cheap