They must have let them up there because they were last anyway.
I remember in the first Race Across the World when the final point was on the top of the Marina Bay Sands Hotel one of the the teams didn't have any money left to pay for the lift to the top. I can't remember exactly what happened but it showed them running around asking to borrow money (I think it was relatively cheap) or they talked someone into letting them go up for free (and pay later). Not sure either way but they did get to the top but they were in the running to win at one point (or that's how it was presented). They certainly weren't last.
Live everyone else not keen on Princess Alex but loved his Dad. His Dad was even sobbing when he read that Bonnie & Billy had gone. Rather unfairly, possibly, I thought Alex was probably thinking that they'd got a better chance of winning now! 😂😂😂