Here's my two cents for what it's worth.
The issue of marriage ceremonies in homes did not depend on the economics /finances of the families. Many families did not "belong" / were "members" of synagogues as they might be now. Membership as we know it today includes tickets / seats for the High Holy Days, etc. Years ago the shuls sold seats for the holidays. Membership was not a requirement.
Let's get back to home weddings. Not only were the ceremonies conducted in homes, but the receptions / parties were also at home. Not like today where thousands of dollars are spent on parties for both weddings and bar & bat mitzvahs. Years ago people had "open house" to celebrate such events.
Adelle Weintraub Gloger