Sure it'll be fine just wear loose jeans/trackies for a bit. Cling film for first 3 days. Touch up if needed.
I want my knees done. Not sure if they're too knobbly though. I'd quite like a roaring bear or a tiger or one of each. Worried would be a bit wizard of Oz though (I do also already have a lion as part of my right sleeve)
Cling film for three days? I've never kept cling film on for more than an hour or so after a tattoo. As far as I know, it's to keep it from weeping and sticking to your clothes when it's fresh; I've always gone home and washed it up with soap and water. Aquaphor or similar for a day or two depending on the size and then just lotion. Keep it clean, give it air and treat it like a minor skin abrasion has worked brilliantly for me over all the body I've covered.
Maybe the knees are different, but that seems like it would keep a tattoo from healing. I've never touched up a tattoo in over twenty years and certainly not from the healing process.