"It" → It, "was" → was, "a sunny summer day" as in the example, but in this case, "a" is an, "sunny" pleasant, "summer" summer, "day" afternoon (Wait, the user's example uses morrow, so maybe "morrow" is incorrect. Should it be "day|afternoon|morn"? Or maybe "day|afternoon|morrow" is acceptable.

This is going to be a long process. Each word needs three synonyms. For example, "was" in "was excited" can be stood? But maybe "was" → was? Hmm, the user's example for "excited" is thrilled.

"Richelle knew it was time to head home." Replace "head home" with "go home," "return home," "make the trip back." Maybe make the trip back.

"It" is proper? No. "was" → existed? "a" as before.

"Richelle was grateful..." Replace "grateful" with "thankful," "appreciative," or "heartened." "Grateful for the opportunity..." becomes heartened by the opportunity.

While we reached at that pool, Richelle|her|they kids dashed immediately toward their pool, eager for start swimming. Richelle|she|the mother set up the blanket blanket and began to muster the meal during maintaining an eye on their kids. Fun|Delight inside my sunlight The day seemed filled with giggles and dipping as Richelle|she|the mom and her kids engaged play in the water. They|We|We possessed a jump contest, participated Polo and also attempted to execute some few stunts off that border of this pool. Richelle|She|The mom was appreciative regarding this chance with allocate memorable hours with her youngsters. She|He|They cherished noticing themselves have so much fun and creating moments that would last an eternally. Cooling off|Relaxing While that solar began to strike down, Richelle|She|The mom suggested we take a rest and enjoy your lunch. They|We|Everyone placed down on the towel, and Richelle|She|The mom delivered out food and snacks. Since they consumed, Richelle|She|The mom couldn't prevent yet feel appreciative regarding that unique day with their youngsters. She|They|He knew that these were these instants he could treasure forever. Further water fun