Two Things:
1) Rent out a Restaurant for your Reception. We rented out Toucan Reef (the restaurant near the aquarium) for our reception. Because it was a restaurant, it came with EVERYthing! We didn't have to pay extra for tables, chairs, linens, plates, glasses silverware and even the staff was included! We paid a tad extra for an extra bartender. Renting out a restaurant limits some of the stuff you can do but it makes it so much easier and cut the number of vendors I needed to use in half! It was great and they did a great job. 180 is too many for Toucan Reef but consider having your Rehearsal dinner there. Great views of the Harbor.
2) Skip the Favors and do something meaningful. Favors are typically a waste of time and stress the bride out b/c she has to assemble them.
Make a donation to a charity in honor of a family member. We did this and put cards on all the tables saying "In Lieu of Favors a donation has been made in honor of __________". Your guests don't have to know the amount but we donated $100 to the American Heart Association.