a video from 4 months ago, what it normally looks like to transit the canal: https://www.youtube.com/watch?v=XwdU2cYRbnM
If the toll is deemed to be too high a vessel always has the option of going around the Cape.
Realistically it's always an option but the added time plus the additional wear on a vessel makes it undesirable.
Maintaining the channel seems to be a lot of work... like when ships crash into the bank and block it.