Hi Jenny,
Sure, there are 16 people booked on the tour at the moment, 4 are men and the other 12 are women.
Generally credit cards are widely accepted in North America, however, we would suggest taking some cash as well. Your Tour Manager can't take credit card payments for any optional excursions which are bookable locally so you would need to budget for this if you've not already pre-booked. Tipping is also customary in the US so best to take some cash with you for that.
Most hotels will have a safe available. Some hotels have a safe in the room while others may have a deposit box behind reception that can store small items and cash. We wouldn't advise carrying large amounts of cash or valuables on tour as a safe can't be guaranteed in all rooms at all hotels.
Thanks.