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I wouldn't but you can. There will be residual water around but a super chlorination will take care of it. Some do just because, but I never did. Of course I only bought one new tub in my life. I do it for most of the used ones I have acquired over the years but only because you don't know how well the previous owner cared for it.
You will know when you turn it on but even if it does show a little, soak and add extra sanitizer after, see if it clears up. You will likely have to drain early anyway on your honeymoon.
Yes, i got two not really expecting to have to use the second on this draining. I used about one and a half. Its amazing what i got out...The nasty stuff just floated on top of the foam and stuck to the walls.