I agree, I wouldn't think you would want to be on the side of the openings so you won't disturb their flight path. (Although I'm no expert, I just installed my first package last night!) My Kenyan style top bar hive also has an observation window so I can check progress without disturbing, so I plan to stand on the side with the window to observe, then open the top if necessary.
I am using gloves until I feel more comfortable, I was told to wear light colored clothing as well. I didn't wear my veil during installation yesterday and bees kept flying into my hair, so I'm going to try a white bandana with my hair up, the veil looks to impeding.
Good Luck! I will be checking back, as I have many of the same questions you do!