This episode ended up three minutes short of the required running time. For its original airing, CBS filled the gap with a clip from Guys and Dolls (1955) (the "Adelaide" number).
Towards the end of the episode when Lucy walks out of the bedroom where little Ricky is sleeping, the hotel bedroom has the same decorations on the wall as little Ricky's nursery in New York does.
Ethel reveals that Fred gets seasick. This becomes a plot point later in the season in the episode "Staten Island Ferry."