Hey,
I have had laser removal by a couple of different people and currently from one of the most reputable in New York. In the care package I am always given sterilized lancing needles and told to pop blisters, let them drain and clean with hydrogen peroxide. Although they look a mess they heal up fine.
Also I'm given bandages and told to wrap for half of the day and then uncover when i get home (I usually remove after work, clean and pat dry with a paper towel). The bandages last about 4-5 days so I leave uncovered after that. I have done this for about 6 large sessions with no issues.
So I wouldn't worry!