But magically, only one or two will do so at a time, as if they are doing it for everyone. You can have your new Ancestor's body taken to your home, or to a funeral director. Funeral directors are generally respectful of your individual wishes. If death is soon to happen you may wish to tell your doctor or the hospital ward manager what you prefer. You can have any ceremony you wish at a crematorium.
Staff are usually very broadminded and supportive.
However your main problem is that you have just under 30 minutes so you may find it helpful to consult me about possibilities within such a time range. The number of expected guests affects what you can do in the time allowed. You can have one burial done anywhere you wish as long as you have the written consent of the owner of the ground. A second burial is not possible without special planning permission to recognise the plot as a cemetery. Children are a natural part of funerals.