I was in the fence game for a while and a long term resident of the wet side. Rebuild your fence with galvanized gate posts (it was already mentioned) you could either paint or powder coat them before they go in the ground to make them look nice with your cedar boards. Thats what Ill be doing on my next round.

Go with the black vinyl chainlink; it'll really make the colors of your Solo cup flag art "pop". Your gonna need 40 blue 8 oz Solo cups, 162 red cups, and 149 white ones.

Here is the color-coded pattern the cups will make in the fence holes:

1) B,B,B,B,B,B,B,B,B,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R

2) B,B,W,B,W,B,W,B,B,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W

3) B,W,B,W,B,W,B,W,B,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R

4) B,B,W,B,W,B,W,B,B,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W

5) B,W,B,W,B,W,B,W,B,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R

6) B,B,B,B,B,B,B,B,B,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W

7) R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R

8) W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W

9) R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R

10) W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W

11) R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R

12) W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W,W

13) R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R

In 25-30 years when the chainlink has degraded to disgusting, those Solo cups will be barely into their half-life. You can run them through a cycle on the top rack of your dishwasher and use them to celebrate your move to the retirement home.

There's still time to get this done by the Fourth of July.

Too much work, although very creative !
I would recommend the standard Elvis Velvet Art display.