11 month old with 1-2 hour middle of the night wakings

So my 11 MO was sleeping alright for awhile but we slept at a hotel for a night for a wedding and she had an awful split night, just seemed super excited to be somewhere new and woke up at 2 am and stayed wake for 2 hours. I anticipated something like that would happen since it was a new environment and we didn’t have time to acclimate her prior to the wedding and she went to bad half an hour late. Problem is since then for the last 4 nights she has been waking up between 12-2 and staying awake for 1-2 hours, sometimes she’s content, talking and crawling in her crib and then getting really upset after 30 minutes but last night she woke up screaming and stayed upset for an hour. Nothing gets her back to sleep quickly but once she’s asleep she’s been sleeping past DWT so we have been trying to wake her up by 6:45 (DWT is 6:30) so she not in bed more than 11 hours and her naps have been very normal 2 ish hours total a day. She has also been fighting bedtime more, fussing and/or crying as soon as we start the bedtime routine but falling asleep within 5-10 minutes. Her schedule is 3.25/3.75-4/4-4.25. She’s been on the lower side of sleep needs averaging 12.5 hours per day and is generally quite happy and active so I think she’s getting enough sleep usually.

Is this a regression? Schedule issue? Is there something I could do about it?