We're left with simple, unadulterated faith.
Come on, now, you're not telling me that you truly believe the Apostles originally worshipped in exactly the same manner as the JWs, Mormons, Catholics, or Protestant Reformers, etc., etc.?
I'm not denigrating the sacraments, with my comments. I hold them in very high regard, and they are an intimate and regular part of my own worship. That having been said, though, I don't believe them to be "saving" ordinances. Vital, yes, but not the means of salvation.
To hold them as such makes idols of them, substituting a salvation of grace with a salvation of continuous works. It replaces "faith" with a checklist against which we must compare ourselves before we accept the bond that has evidently been experienced with the "Divine".
Of course, if an individual has never experienced that, maybe a bunch of such tokens is pacifying - check off the list, by human efforts, and enter into "Kingdom Kindergarten"
"God" remains my Daddy, whether I go to supper or not...