If the shipment container is truly validated there will be extensive documentation to support sample integrity under a wide range of likely shipping conditions. Unless there are exceptional circumstances, such as transportation delays beyond the validation period, weird weather, etc. then I would argue shipping without a data logger this is acceptable.

However, there are advantages to using a data logger since you have a full record that covers even these exceptional circumstances, this may result in you being able to still use the samples.

So, firstly I would look at how "validated" the containers are - for what extreme temperature ranges and duration do they provide protection? Then look at the shipping logistics for your samples (time, geographies, climate, transportation mode, etc.).

In the end you should base your decision on the risk associated with potentially losing your samples.