I'm sure she will find a suitable locaton and if you like it then schedule the Baptism party there. If your mom doesn't have ideas have her check with the Chamber of Commerce. They should know all the places that would be suitable for a baby shower.
I agree that the "old" staff may not be working up to par if they will be loosing their jobs soon. On the other hand, if the new owners are going to retain the staff (which they do sometimes) they might give even better service trying to impress the new owners. Have the new owners said they would honor the contract?