Do you need a shuttle ticket to hike sentinel pass?

[u/MacklePenguin_Lol]

Travelling later this September and really keen to hike the sentinel pass though from what I can see this is only possible if you are lucky to grab shuttle tickets - I’ve done a few practise runs with no luck, so I wanted a plan B if possible if I am unsuccessful getting the tickets.

Apologies if asked before, I have tried to search this forum with no luck.

Appreciate any advice as first time to Canada.