Accepting an offer and later declining it

[ATMIT]

Hi,

I received an admit for the Ph.D. program, with a research assistantship from university A. I have to accept/decline the offer before April 15th. I am also waitlisted for admission in my dream university B which will announce its decision by end of April. If I accept the offer, from the university A and later receive an admit from the ambitious one I have to obtain a written release from the university A before accepting the other offer.

Will it be a problem to get such release, and will it affect my career in future?

Following URL gives the terms and conditions of accepting the offer.
http://cgsnet.org/april-15-resolution

Please provide your suggestion

[rising_star]

In most cases, it isn't a problem. In your case, I would wait until the absolute last minute to accept the assistantship at University A.

[Bird of Passage]

@ATMITAsk University A to extend the decision deadline. It's a common practice. I just asked my university to extent it.  I explained that I was waiting for the response from other school and they said yes, it was not a problem.