Hi M2n2,
We stayed in Val d'Europe in June 2014 (Hotel l'Elysee) and June 2015 (VRBO apartment rental). Val d'Europe is one train stop over from DLP and is a nice neighborhood with several restaurants, bakeries and tons of shopping at the Val d'Europe mall. The mall is a block away from both places we stayed and includes the Auchan hypermarket. If you want to throw together a meal or just purchase snacks, that place has it all.
Link:
http://www.disneylandparis.co.uk/shops/val-deurope-shopping-centre/
The Hotel l'Elysee was comparable to an American mid-tier hotel with a bar and restaurant. They served B,L, and dinner, non of which were included in the price of the rooms. A free neighborhood bus passed right in front of the hotel to/from DLP at roughly 30 minute intervals depending on the time of day (15 minute trip). The hotel is also 1/2 block from the RER-A train station. The RER-A line originates at DLP then travels to the Val d'Europe station (3 minutes) and on into Paris (very convenient, about 25-30 minutes to central Paris). The RER-A line at DLP also shares the station with several TGV (high speed) trains from CDG Airport (and other French cities). You can get to DLP in about 10 minutes from CDG airport non-stop via the TGV. The airport also runs regular buses to Val d'Europe and DLP which takes approximately 30-40 minutes depending on traffic (cost ~$30/per?). I am not aware of any courtesy van to DLP, the distance is approximately 25 miles.
In 2015 we rented a 2 bedroom apartment from Christophe via VRBO. He was great to deal with and speaks English.
Link:
https://www.vrbo.com/978866a
We liked the apartment much better (easy decision) for our family of 4 due to the price and amenities. The apartment was on the 5th floor (top floor IIRC) and was 1/2 block from the RER-A station for Val d'Europe too. For the 2015 trip we used the RER-A train back and forth to DLP since we had the weekly Paris passes (Navigo) and didn't use the bus. I can't recall if you had to stay at the hotel in order to use the bus or if it was free for the neighborhood. There are several hotels and VRBO rentals in the area, just try to stay within walking distance of the bus route or RER-A train station.
As far as staying onsite at DLP I felt the rooms were pricey for what you received, $300-$400 for moderate type rooms, $500 plus for the DLP Hotel. Some of the reviews I had read prior to our trip did not impress me (things may have improved). We didn't see the value and chose to stay offsite. Also the euro and pound exchange rates were $1.35 and $1.58 when I originally researched the rooms back in early 2014, so that didn't help either. Most of the websites I looked at were out of the UK and were priced in British Pounds. For park tickets we ended buying AP's (they had 3 levels?) that had a few black out dates, they still ended up costing less than a 4-day pass. We were also able to squeeze in a couple days at DLP in 2015 before the AP's expired.
Visiting DLP was a mixed bag, yes we had a good time but there were some drawbacks. Their version of space mountain was closed both years in addition to a couple other ongoing ride refurbishments (bummer). Cigarette smoking tends to be a constant activity outdoors in the parks (if that bothers you). The Disney CS restaurants were mediocre at best and the higher end restaurants were pricey ($65 per person, again exchange rate) for a family of four. We ended up eating at their version of Downtown Disney (Earl of Sandwich, etc).
The language barrier wasn't a problem at the parks as everyone we encountered spoke English. Even outside the parks in Paris it usually wasn't a problem. We traveled through western and central France with very few language issues (we spoke a little French, enough to be dangerous).
Lastly, I'm not trying to tell you how to run your trip but...... for the love of all things holy, GO INTO PARIS (if you have never been), it's awesome with a capital A! It's made for anniversaries! (Sorry about that, we loved traveling to France and are in the early stages of planning a trip to Europe next summer)
Enjoy planning your trip, if you have any other questions feel free to ask.
JoeATC