A civil marriage ceremony in Paraguay - where only one party need be present. The Israeli partner can travel out there for the wedding,and the non-Israeli partner can remain in Israel,and give a special power of attorney allowing someone else to represent/him her at the ceremony. The necessary arrangements and proper documentation must be arranged beforehand,and co-ordinated between lawyers experienced in handling such matters in Israel and Paraguay,for the ceremony to be fully legal and valid, and be recognised in Israel, and registered at the Israeli Ministry of Interior upon the couple's return.
Many years ago 'postal marriages' were frequently carried out for couples in Israel,neither of whom would leave Israeli soil. These were later held to be invalid in Israel - and it was made clear that only civil ceremonies carried out in accordance with the laws of Paraguay , and where one side actually travelled out there for the wedding and can prove it, will be recognised.