Is this sentence structured correctly?

It's okay, but a little wordy and has a lot of commas. I'm not sure what this is for, but I think a better way to do this would be to provide more detail and break it into 2 sentences.

For example:

The next day, we went shopping at an outlet mall, then stopped at a restaurant for a bite to eat. After returning to the hotel, we decided a swim in the pool would be a perfect way to end the day.

The next day we went shopping at an outlet mall, and had something to eat, and when we returned to the hotel, all of us went swimming.

Hmm. Well it would sound better if it was two sentences, like "The next days we went shopping at an outlet mall and then went out to eat. When we returned to the hotel, we all went swimming."

Or you could say, "The next day we went shopping at an outlet mall, went out to eat, and when we returned to the hotel we all went swimming."

The next day, we went shopping at an outlet mall, out to eat, and then back to the hotel to swim.

I would break it up.

The next day we went shopping at an outlet mall, and then we went out to eat. Upon returning to the hotel, we all decided to go for a swim.

Try not havin a run along sentance...its too long. try this instead:

The next day we went shopping at an outlet mall and out to eat. When we retured to the hotel, we all went swimming.

Or something li ke that but break it down into 2 sentences.

no, sorry but it makes sense way:

The next day we went shopping in an outlet mall,and went out to get something to eat. When we returned to the hotel we all went swimming.

sorry if i rewrote your paragraph.

sorry my english is not good enough and i`m not sure but i will try ))

the next day we went to the outlet mall and to eat, then when we returned to the hotel we did swim.

loooooool i really dont know.

try this:

The next day we went shopping at an outlet mall and then out to eat. When we returned to the hotel, we all went swimming.

Way too many commas.

How about:

The next day we went to an outlet mall, then out to eat, and when we returned to the hotel we went swimming.