Make sure that you and your company agree with the contract, if you don’t, change it.
Even if you have worked with the client before or know them well and they have previously been lenient on clauses, don’t count on that in the future.
The client PM may change or they may have a change of staff (who don’t know you).
They may be bought out or have control changed and be told to enforce contracts completely.
Your work should always be conducted as per the contract language.
Assume the client will want to enforce that (even if they don’t or haven’t in the past).