Adapted from "Rhumba Across Texas" by numerous people who independently found that it was possible to dance Waltz Across Texas by Lois & John Nielson with rumba timing. Here it is with a mambo rhythm, and simplified turns.
MAMBO ROCK, RECOVER, STEP, HOLD, MAMBO ROCK, RECOVER, STEP, HOLD
Bend your knees as you do these rocks, giving them a mambo flavor
1-4
Rock left over right, recover on right in place, step left back in place, hold
5-8
Rock right over left, recover on left in place, step right back in place, hold
MAMBO STEP FORWARD, HOLD, MAMBO STEP FORWARD, HOLD
1-2
Step forward on left, step right next to left
3-4
Step left in place, hold
5-6
Step forward on right, step left next to right
7-8
Step right in place, hold
MAMBO STEP BACK, HOLD, MAMBO STEP BACK, HOLD
1-2
Step back on left, step right next to left
3-4
Step left in place, hold
5-6
Step back on right, step left next to right
7-8
Step right in place, hold
MAMBO WEAVE AND ROCK TO LEFT
1-4
Step left to left, step right behind left, step left to left, hold
5-8
Cross right over left, step left to left, step right behind left, hold
9-12
Rock left to left, rock right to right, rock left to left, hold
MAMBO WEAVE AND ROCK TO RIGHT
1-4
Step right to right, step left behind right, step right to right, hold
5-8
Cross left over right, step right to right, step left behind right, hold
9-12
Rock right to right, rock left to left, rock right to right, hold
1-4
Step forward left (at 9:00. That's a ¼ turn left), step right together, step left in place, hold
5-8
Step back on right (turning to 6:00. That's a ¼ turn left), step left together, step right in place, hold
9-12
Step forward left (toward 3:00. That's a ¼ turn left), step right together, step left in place, hold
13-16
Step back on right (turning back to 12:00), step left together, step right in place, hold