What does it mean when he says feel free to text me?

A guy and I are planning on meeting up soon for a date. Before we set an actual date he said he would probably be quiet for the next week because he will be away with his daughter at Disney World. I said cool - have fun and then he said well feel free to text me when I’m away, we can make plans when I get back. Should I text him to show interest or would he reach out if he was interested - so I shouldn’t text?
What does it mean when he says feel free to text me?
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