You should be fine. Tomatoes need about six hours of sun, and between the filtered morning sun and all afternoon of full sun you will have plenty of light. Mine only get about five hours of sun at best and are quite healthy. I'm sure my production is lower than I would have in full sun, but I still average a good 10 to 20 beefsteaks per plant.

TomNJ

Yeah you should be ok. The worst that can happen is the plants stretching some - getting a bit more leggy than usual - so you'd need to compensate with your supports in some way. But if removing or even shortening a few tree branches here and there is possible it would be of help.

Dave

At some point you may want to have an arborist in to trim. They can thin out the branches to let in more light, but not harm the look or health of the trees. I had it done two years ago when I noticed my yard had gotten significantly more shaded by my trees. It made a big difference. I'll probably have it done every few years to keep up the level of sun in the yard as the trees grow.

Last year, my hubs planted the tomatoes along the back fence so they got zero sun in the morning. They still produced, not our best year but it was ok. I'm sure you'll get a decent amount of fruit, good luck! :)

Thanks for the votes of confidence...I feel MUCH better now!