Wow! I thought our Alaska cruise was expensive, but the more I plan of this entire trip, the costs are adding up FAST for the non-cruise aspects! 
So...we are 2 families - 6 total. The current plan is to need 2 rooms of 3 each. Everything I'm looking at is over $300 a night!! I'd love some recommendations.
We are flying into Seattle pretty late on the 7th and would like to grab a shuttle/cab (would take recommendations there too) into town to a hotel to spend 2 nights (August 7 and 8).
On the 8th we would like to sight see in Seattle - probably breaking into 2 groups as our interests vary. Some of the things we're interested in possibly seeing between us is the Space Needle, Pike Place Mkt, EMP, Pioneer Square, and the original Starbucks. Those are the top things on each persons' list. Also tings they are semi-interested in are the Locks and Aquarium. Again, we know we can't all do all of these things, but plan to separate. For example, we talked about 2 of us going up the space needle and the other 4 going to EMP, etc.
The real caveat is that on the morning of the 9th we have the early Amtrak to Vancouver and we will have lots of luggage. Our original plan was staying relatively close and taking a cab to station. After looking at prices, we'd be more willing to move out a little, but I guess also take a cab (or 2 with 6 of us).
Anyone want to help me figure this out. I'm the designated planner for our 2 groups.
Thanks ahead of time for all input.

So...we are 2 families - 6 total. The current plan is to need 2 rooms of 3 each. Everything I'm looking at is over $300 a night!! I'd love some recommendations.
We are flying into Seattle pretty late on the 7th and would like to grab a shuttle/cab (would take recommendations there too) into town to a hotel to spend 2 nights (August 7 and 8).
On the 8th we would like to sight see in Seattle - probably breaking into 2 groups as our interests vary. Some of the things we're interested in possibly seeing between us is the Space Needle, Pike Place Mkt, EMP, Pioneer Square, and the original Starbucks. Those are the top things on each persons' list. Also tings they are semi-interested in are the Locks and Aquarium. Again, we know we can't all do all of these things, but plan to separate. For example, we talked about 2 of us going up the space needle and the other 4 going to EMP, etc.
The real caveat is that on the morning of the 9th we have the early Amtrak to Vancouver and we will have lots of luggage. Our original plan was staying relatively close and taking a cab to station. After looking at prices, we'd be more willing to move out a little, but I guess also take a cab (or 2 with 6 of us).
Anyone want to help me figure this out. I'm the designated planner for our 2 groups.
Thanks ahead of time for all input.