Hi Maryann: Have only been on large ships (800-2500 passengers). On the Pakhomov we had about 150 passengers and during the course of the trip we got to speak to just about everyone else at one time or another. This trip is very intinerary-intensive. You'll be out and about touring most of the time. Day clothing should be casual/comfortable and probably light layers or a windbreaker for September. Evenings were also casual - I took three pair of slacks: black, white, tan, and a mix and match assortment of tops. For the dressy evenings, a skirt/twin set, dress/jacket or pant suit are fine. The food was great, the tours and guides exceptional. For further details, check out Fodors.com travel talk. Search for "Russia" and read all the posts under "My River Cruise in Russia" and My River Cruise in Russia part 2" You might find some fellow travellers there!