Answer... Whole numbers for each player are used, so a .51 (1) and a 1.51 (2) may play together. (Incidentally, we would like to see this change in the future as using decimal ratings is simply more fair (assuming a .51 is a better player than a 1.49), but to date, tournaments just don't do it this way. I suspect it's just done to keep things simple... I guess).
Answer... You CAN park your RV in the parking lot of the hotel, however, management says you still must have a room in the hotel.