IMO, it depends on two factors:
1) Will you be comfortable going on (and waiting in line for) the big slides by yourself? Obviously, those will be off limits for your DD, and they can take some major time.
2) What's your "Nervous Nellie Quotient?" Even on the lazy river, your DD would likely get splashed, and if that will make you or your DW freak out, it's not a good idea.
If it were me, I'd douse both of us with SPF45 and spend hours floating around in a circle. But then my "NNQ" is very low.