We're a party of 3 too and had trouble with some ADR's...until we got a couple of tips from helpful CM's. First, if you can't get a table for 3, get one for 1 and one for 2. Then when you arrive, ask to sit together. This works the vast majority of the time. Or, say you're a party of 4, and when you arrive, simply say you only have 3. They'll honor the res. for 4. Again, these tips come directly from CM's on the phone and in the park.