I know you were discussing this a few weeks ago so it may be too late, but hopefully this will still be helpful. i have four acceptances right now, and 4 recruiting trips planned. One is next weekend, two the weekend after that, and one the third weekend. I emailed two of the schools, and am postponing until other weekends in March. When I emailed, stating that I already had a trip planned for that weekend, both schools were perfectly happy inviting me the weekend that I asked for, including airfare. Its definitely worth asking if you can visit another weekend. Most likely, other students will be visiting late as well. Good luck and have fun visiting schools!