I'm so glad to finally share the actual Lego party! Putting it together was lot of fun. I reused previous party items--polkadot tablecloths, green fabric for flag bunting garland and happy birthday lego sign (friend's). Lego blocks were used for party decorations. All the party guests were kept entertained throughout the party. And most importantly Lucas had an "awesome" time!
I will list resources at the bottom of the post. Sorry for the many pictures. It was hard to narrow down.
Tea Party decorations--hanging garland or streamers over the party table. The kids love it because it makes the party more intimate and squares off the table from other party activities. I used tall wooden garden sticks and crepe paper to hang over the eating table.
Lego Building table--the kids were asked to build different legos cars for one of their games. The kids also played a lego relay and lego hunt. Pinata too!