Accepting Scholarships Question

Ok, so I have currently been accepted into 2 schools that I consider my safeties. However, I am still waiting on 3 other schools to send me their decisions in March so that I can make my final college decision in April.

Meanwhile, I have been sent financial aid packages and scholarships from the two safety schools, and they are very good packages. They are asking me to login their websites and accept the financial aid.

If I accept a financial aid package on a website, does that tell the university that I am committing myself to attend? (before the enrollment deposit) Do I lose the financial aid package if I do not accept it right away?
Obviously I have not put down an enrollment deposit because I am still waiting for the other schools decisions in March but I do not know where I am going to end up yet. I don’t want to lose the financial aid package but I do not know where I will go to college next year as of now. What is the best way to approach this?