Norma, I can't answer your specific question about this trip, but perhaps I can offer another perspective. I have a captain's license and have taught sailing classes for our sailing club. There is always a question about safety and what conditions are too much. And a great question that is.
Most well-designed boats can take a lot more than their crew (evidence of this from when the CG pulls people off a boat and the boat later drifts ashore on its own). The unknown is one's comfort level. Go out in conditions that are beyond your comfort level and someone is likely to get scared to the point that they don't want to go out again. And those same conditions may seem benign to someone with more heavy weather experience.
Start easy and work up. As you see that you can handle a bit more, take on a bit more. Small Craft Advisories mean different conditions in different parts of the country:
http://www.nws.noaa.gov/om/marine/cwd.htm
There is a lot of difference between 20 knots and 33 knots on sea state. Knowing how far you are to some protection, taking proper precautions, and having communication ability along your route will all influence your comfort level.
It could be fun, an adventure, or a frightening experience depending on one's attitude and the equipment. There is an old saying, "the difference between adventure and ordeal is attitude." We've seen this so much in sailing: some people absolutely freak out when a boat heels (a normal part of monohull sailing) and some love it. It's all about the comfort level. You may miss some great boating by not venturing out if conditions seem dicey, but that beats being frightened. If you get the chance to go out with someone who has more experience with weather, it will increase your comfort level faster. And especially with a little one onboard, it is better to err on the side of caution.
Have a great time at the gathering, regardless of your mode of transportation!
Best wishes,
Jim B.
We've done some pretty fun activities over the years... with flying, motorcycling, sailing, etc, we've always made it a point to be sure the least experienced person aboard has fun... it's how you bring new people into the activity.