Don't know about Rhode Island, smallest of the 48, but I knew a gal from Boston who lived in the Brighton neighborhood, which she would pronounce "BRY'ehn." She was from a nice town west of Boston and was facetiously putting on a rough 'townie' accent.
My own dear departed father, born on Manhattan's east side in 1932, pronounced "bottle" like "bah'l" (bo(tt)le?). Yours truly pronounces "mountain" more like "moun'in" (moun(t)'n?) where the "t" is so lightly pronounced it's but a suggestion.