You will have reasonably good pressure when you first open the faucet after the pump has stopped. It will drop off as the pressure drops and the pump kicks back in. After that, you'll get the volume of water that the pump is capable of moving. The volume isn't going to be great, and not under a lot of pressure, but it should be adequate.
If the volume is really low, it may be time to replace your pump.
AIR 2053 Current: 2006 Born Free 32 RQ Kodiak Chassis, & 1995 Coachmen B-van
Former Airstreams: 1953 Flying Cloud, 1957 Overlander, 1961 Bambi, 1970 Safari Special, 1978 Argosy Minuet, 1985 325 Moho, 1994 Limited 34' Two-door, 1994 B190 "B-Van"