How do you discuss a partner repeatedly impacting your relationship because of their NRE with others?

So, I've got a partner with whom I've repeatedly discussed NRE.

I don't really get NRE; I tend to actually invest less initially until I feel like it is worth it.

This partner is the opposite, however. We've talked about NRE, and they've acknowledged they experience it and are working on not letting it impact our relationship. Typically, this manifests in them staying out far too late and then being extremely tired for our regularly scheduled (weekly standing) dates, or even dates we just scheduled a few days in advance.

While everyone is tired sometimes and might just not have slept well, this partner recognizes they need a lot of sleep. Our dates always end at no later than 10:30 or MAYBE 11 if it's an extreme circumstance. Last night, they were out until midnight and had to be at work at 7 this morning.

I am trying to withhold anger, as I don't know if they're going to be extremely tired when they see me later, but I feel like if they are, those feelings will seem legitimized/validated.

Is there anything you can do about partners' NRE other than just wait and hope they'll work on it?

How do you express your frustration or concerns if you've already done so?