"Three Entertainments" are light-hearted, descriptive vignettes - have fun with them! If it feels right to add a trill or a glissando, do so. "Summer Rain" expresses feelings born while watching the rain from the front porch.
"Top Hat" was written to evoke tap dancing and I had in mind two old gentlemen who are "trading moves", perhaps in memory of earlier performances together.
"Fiesta" is, of course, of a Latin flavour - lots of sunshine and good humour. I imagine it describes a party with good food, dancing and much showing off.
An excellent performance of the third movement "Fiesta" by students at the Castellani Andriaccio Guitar Studios! Watch the second movement "Top Hat" here.