You log in using your last name and room number. Or log in to your Hilton login with room number if you're an HHonors member.
There is very good free wifi. There is a premium option for a daily fee. It appears to expire daily. It is provided via a gateway page that requires a couple of questions. I was able to stream 720p video from my home Plex server just fine. Remarkably decent for free.
When you check-in they explain it to you. Most places changes their passwords at regular intervals.
Go ask the front desk
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