Either way. It really depends on many factors, like how far you live from each other and the method of traveling. After-placement visits and travel can be decided between the birth parent and adoptive families. Birth parents are responsible for their travel expenses for visits after placement in most cases.
It is important to speak with your adoption professional on what you would like your open adoption contact to look like and to discuss it with the adoptive family before placement. You will work on an adoption agreement that both the birth parents and adoptive parents sign.