Fifth in a winning series about a boy whose dog lives with his aunt because his single dad is allergic; the boy's now embroiled in a wedding as warmhearted and casually interracial as Hughes's in The Big Alfie and Annie Rose Storybook (1989). The inevitable mishaps differ amusingly from friend Dorcas's doleful predictions (based on her experience as a flower girl); Abolafia again illustrates with affection and panache. (Easy reader. 4-8)