They make space saver bags for suitcases that roll up to release the air. They are almost as effective as the ones that require a vacuum but are smaller so you would need more of them.
If you are flying, be careful to not over load the bags. The overweight costs are very high. That is the down side of the space bags, you can pack too much in one bag to easily.
We stayed at BWV last August in a 2 bedroom, the upright vacuum did have a hose attachment that I used on the space bags for our trip home. Be careful about the weight, we had to buy a duffel bag to reduce our checked bag weight.