"I Do"

I recently noticed that at ~1:28 in "I Do," the tubular bells start playing in this rhythm:

I'm not sure of the technical differences (since one's in 4/4 and the other in 2/4), but this sounds similar to the rhythm in the Bridal Chorus in Richard Wagner's Lohengrin:

notation found here

I'm not at all familiar with Lohengrin, but it seems that this tune is often used in wedding processions, so it's fitting that the Beach Boys subtly reference it (or at least its rhythm) in a song about marriage.