求分析deadline

刚录取的UFL的 Biostatistics program PHD with financial assistantship.
在offer letter里有下面这段话,后半段看不太懂,请问是什么意思?
If you decide to accept this offer, you will need to sign and return to us as soon as possible, but
no later than Monday, March 26, 2012. Such acceptance will not be considered a waiver of your
right to process a grievance concerning this appointment, pursuant to any applicable law, rule,
or Collective Bargaining Agreement. This appointment shall not create any right, interest, or
expectancy in any other appointment beyond its specific term.

还有为什么deadline会这么早?

因为是offer的缘故吧 希望你快点决定 如果不去的话 在4.15前他们可以把名额给别人

应该是，因为有415的缘故。如果大家都拖到415decline会害了不少在wl上的人的。。所以，为了攒rp，不想去的学校就尽早withdraw.

big cong啊，虽然不是一个专业的，但是真心希望能受到ufl的offer啊