Tropic Air does a deal to Lamanai. Fly to Orange Walk(Tower Hill). Catch a river boat (the river part of the tour is a hi-lite) to the ruins. Spend a couple of relaxed hrs at Lamanai.
The advantages are:
1) Avoid the cruise ship crowds(several hundred)
2) Avoid 6-7 hrs travel (1 hr to the mainland, 1 hour by bus to the New River, 1 hour on the river to the ruins) then back of course.
3) You are back in San Pedro by 1:00pm. The flite time is about 15-18 min's to and the same back.
4) You get a couple of hrs at the ruins with no crowd. With the other tours, you only get about an hr at the ruins and you are rushed.
Both Tanisha and Searious are excellent operators. Willie and Danial are superb and extremely knowlageable guides. Unfortunatly the cruise ship crowds hit at about the same time their tours arrive. The park just can't handle the large groups that the cruise tour operators bring.