I don't think that would sound cheap, these people are all coming to see you get married, so why not just set up a little schedule for them all and say that you would love for them all to meet and let's meet up at so and so place at so and so time.
Also I know that some of the girls have been able to work out deals with their hotels about welcome dinners, check with Tammy (host) about this, I think she got a great deal on some extras for her wedding.